**The Great Gatsby's Legacy: A Lateral G-Test**

Jerry and Zach are back at the track for a lateral g-test, where they'll drive around a big circle to see which tire can maintain grip even when faced with high lateral g-forces. Jerry mentions that tires from 100 years ago were not designed to handle such forces, and their design would be outdated.

The first tire to be tested is the modern Michelin Tweeled, designed for off-roading. Zach starts his run on this tire and posts a time of 11.09 seconds. Jerry notes that this is part of a pattern where modern tires seem to perform better than older models, even those from the future.

**Airless Tires: A New Era in Tire Design**

The Michelin Tweeled is an airless tire, designed to provide support and grip on the road while also being puncture-proof. However, its design has some limitations. The spokes are made of polyurethane, which doesn't transfer heat as well as air does inside a traditional tire. This can cause the tread to become hot and fail more quickly.

Jerry is concerned about the tires' performance in the lateral g-test, noting that they feel soft and sloppy. Zach's run on the modern tire suggests that it may not be the best choice for this test.

**The Durability Test**

To determine which tire performs better, Jerry and Zach set up a mixed track with some off-road sections, a curve, and a spike strip just before the finish line. The tire that completes the course in the shortest time wins.

Zach's run on the modern Michelin Tweeled is interrupted when his tires start to "gut out" from the curb, but he manages to cross the finish line with a respectable time of 58.29 seconds. Jerry, on the other hand, finishes with a time of 49.69 seconds, which is faster than expected.

**The Verdict**

While the modern Michelin Tweeled shows promise, its limitations become apparent in the lateral g-test and durability test. The tire's design, while innovative, has some flaws that make it less suitable for everyday use. Jerry notes that these airless tires are still in their infancy, with manufacturers struggling to address heat dissipation issues.

As the video concludes, Jerry invites viewers to share their own car-testing adventures and create content around similar tests. With a mix of humor and expertise, Jerry and Zach have created an engaging video that showcases the challenges of tire testing and design.

WEBVTTKind: captionsLanguage: enwhat happens when you put 100 year old tires on a modern car my tires guts are coming out what about tires from the future on a car from today how far is Tire technology come in the past hundred years and are these airless tires really the tire of the future let's find out welcome to Donut this is a 100 year old wheel and tire off of a Ford Model A and well model A's are pretty expensive so we had no choice but to put them on a Miata oh and that wasn't as easy as you might think you see our Miata uses a four by 100 bolt pattern but these super old Wheels use a 5 by 5.5 bolt pattern uh we got a bit of a problem Zach yeah uh but that's no problem they're off the shelf adapters that convert these exact bolt patterns the tricky part is the size difference normal Miata tires are 22 inches in diameter but these old ones are 30 inches there's no chance these will fit under the wheel wells so we have to use spacers a lot of space Oh yeah it looks like we're gonna need a lot of spacers like possibly double digits and since our future tires have the exact same problem we decided to just leave the spacers on the whole time but how will 100 year old tires perform in a modern braking test is she wondering how those compare to a modern set of tires so obviously we've come a long way in 100 years but what about the future well what the heck the future Tire didn't even do as good as the present day Tire it barely did better than the old one what's up with that over here Jerry this is a 1928 Model A Tire and many early pneumatic tires like these were just simple molded cases of natural rubber designed to prevent the inner tube from rupturing that's right this thing's got a tube in it but these specific tires were revolutionary at the time for using bias ply technology that's when Plies or layers of fiber are crisscrossed throughout the natural rubber at 45 degree angles to the rim but that structure helps the tire hold its shape it makes it a lot stronger than just plain old Rubber and when your tire has more strength it's going to lead to improved performance the only problem is back in the day these Plies right here were made out of cotton and cotton and natural rubber tires have all completely disintegrated years ago so you might be saying hey Jerry the model A Tire doesn't exist anymore and how'd you get this one well these are replica Model A tires built with the same tread pattern and construction just with updated materials but here's the thing I want to know how these compare to a tire like this in a modern day driving scenario that's right Jerry you tall glass of brains yeah now we just got done testing these tires and comparing them in terms of breaking so now it's time to compare them in terms of acceleration all right we got Adam down there in the Miata ready to go all right Adam ready whenever you are okay ridiculous that was so scared 7.05 7.05 nice now let's see how the modern tires do if you like my shirt you can buy it on donutmedia.com car people takes a village to raise a car all right Adam on you brother it sounds cooler than it was 6.49 6.49 that's way faster than those 100 year old suckers all right Adam ready whenever you are for those future tires hahaha wow that's a little sketchy 7.03 all right so our 100 year old tires did a 7.05 second acceleration the future tires did a 7.03 second and the current day tires at a 6.49 second acceleration so the old ones and the future ones pretty similar I think the lesson that we learned here is there's no time like the present that's exactly right and there's no tire like the present now it's not surprising at all that our acceler tires outperformed the other two they have a compound and tread design specifically made for asphalt but what allows a tire like this to perform so much better than its predecessor is not just the compound but also the advancement and construction so these right here are radial tires ah and unlike a bias ply tire replies on radio tires run 90 degrees from the center but more importantly they have crisscrossing steel belts that sit on the crown now the separation of the crown in the sidewall allows these two areas to function independently because the sidewall isn't linked to the center of the tire it can deflect and roll helping keep the tire in contact with the road to maintain grip in the corners that's right Jerry and to prove it we are back at the track for a lateral g-test all right we're going to drive around this big circle whichever Tire can do with the fastest winds a good Tire will maintain grip even when you've got a bunch of lateral g-forces pushing against you I can't imagine a tire from 100 years ago is going to do all that good they hated lateral G's back then they didn't even know what they were first to set a baseline or Modern Tire Zach let's go foreign yeah with these big old Honkers on it heck yeah now let's see how the 100 year old model A tires do I'm a little concerned about this one this is definitely the jankiest setup looks like The Great Gatsby 9.88 this feels super soft and sloppy I mean you it immediately wants to just slide out you're kind of wrestling with it kind of feels like you're on ice it feels very weird so Zach's on the future tires and his time starts now 11.09 seconds I think we're starting to see a pattern here modern day tires are better than 100 year old tires and even tires from the future now for supposedly being the tire of the Future these things have been performing Pretty poorly so far and that's honestly to be expected when you have a tread compound and design meant for off-roading you see airless tires like these they don't exist yet as a consumer Tire these specific tires are Michelin tweeled and they're really designed to be used on utvs retire manufacturers are saying they're going to have road legal airless tires like these by next year and that's a pretty big engineering challenge because air has an important function in a tire it provides support for your car while also allowing enough deformation in your tire to maintain maximum grip over a large range of operating temperatures and now that's great and all until you get a puncture and then all that grip and support goes away hence the need for a tire like this so to try and make up for the deflection of the sidewall of a pneumatic tire the spokes right here are thinned out towards the edge and are designed to flex mimicking the air in a pneumatic tire but here's the thing these spokes are made of polyurethane and polyurethane doesn't transfer heat like air dust the air inside a tire helps dissipate heat away from the tread a polyurethane spoke can't transfer heat as good so that tread it gets hot and Hot and Hot and hotter and causes it to fail much quicker heat dissipation is one of the big reasons that we haven't seen any road legal versions of this tire yet but the obvious positive of these airless tires is that they don't need air you can't ever puncture them ever so we're gonna do one more test and that is the durability test we've got a mixed track setup some of it's going to be off-road there's a curve we have to run over and there's a spike strip just before the Finish Line whichever Tire gets the best lap time wins like gentlemen okay yeah no problem well let's get across the line before they go flat 58.29 seconds okay we gotta get this thing in before they go my tires guts are coming out now let's see how the modern tires do interrupt might lose the exhaust oh the curb's gonna be tough with these guys and across the Finish Line 49.69 seconds that was way more and we're across the line going off-road okay you gotta line up the slight strip hey we're getting away all right what's my time one zero six point three four hey that's not too bad and they didn't pop when we ran over the nails yeah that seems to be the biggest benefit to these future tires but I think they have a long way to go before they're going to be replacing the tires after that air is safe for now thank you guys for watching this video and everything else that we upload we upload all the time so make sure you hit the Subscribe button and the Bell so you don't miss anything go find a car and your friends and get a camera and make a video about you ruining like we do it's fun really fun byewhat happens when you put 100 year old tires on a modern car my tires guts are coming out what about tires from the future on a car from today how far is Tire technology come in the past hundred years and are these airless tires really the tire of the future let's find out welcome to Donut this is a 100 year old wheel and tire off of a Ford Model A and well model A's are pretty expensive so we had no choice but to put them on a Miata oh and that wasn't as easy as you might think you see our Miata uses a four by 100 bolt pattern but these super old Wheels use a 5 by 5.5 bolt pattern uh we got a bit of a problem Zach yeah uh but that's no problem they're off the shelf adapters that convert these exact bolt patterns the tricky part is the size difference normal Miata tires are 22 inches in diameter but these old ones are 30 inches there's no chance these will fit under the wheel wells so we have to use spacers a lot of space Oh yeah it looks like we're gonna need a lot of spacers like possibly double digits and since our future tires have the exact same problem we decided to just leave the spacers on the whole time but how will 100 year old tires perform in a modern braking test is she wondering how those compare to a modern set of tires so obviously we've come a long way in 100 years but what about the future well what the heck the future Tire didn't even do as good as the present day Tire it barely did better than the old one what's up with that over here Jerry this is a 1928 Model A Tire and many early pneumatic tires like these were just simple molded cases of natural rubber designed to prevent the inner tube from rupturing that's right this thing's got a tube in it but these specific tires were revolutionary at the time for using bias ply technology that's when Plies or layers of fiber are crisscrossed throughout the natural rubber at 45 degree angles to the rim but that structure helps the tire hold its shape it makes it a lot stronger than just plain old Rubber and when your tire has more strength it's going to lead to improved performance the only problem is back in the day these Plies right here were made out of cotton and cotton and natural rubber tires have all completely disintegrated years ago so you might be saying hey Jerry the model A Tire doesn't exist anymore and how'd you get this one well these are replica Model A tires built with the same tread pattern and construction just with updated materials but here's the thing I want to know how these compare to a tire like this in a modern day driving scenario that's right Jerry you tall glass of brains yeah now we just got done testing these tires and comparing them in terms of breaking so now it's time to compare them in terms of acceleration all right we got Adam down there in the Miata ready to go all right Adam ready whenever you are okay ridiculous that was so scared 7.05 7.05 nice now let's see how the modern tires do if you like my shirt you can buy it on donutmedia.com car people takes a village to raise a car all right Adam on you brother it sounds cooler than it was 6.49 6.49 that's way faster than those 100 year old suckers all right Adam ready whenever you are for those future tires hahaha wow that's a little sketchy 7.03 all right so our 100 year old tires did a 7.05 second acceleration the future tires did a 7.03 second and the current day tires at a 6.49 second acceleration so the old ones and the future ones pretty similar I think the lesson that we learned here is there's no time like the present that's exactly right and there's no tire like the present now it's not surprising at all that our acceler tires outperformed the other two they have a compound and tread design specifically made for asphalt but what allows a tire like this to perform so much better than its predecessor is not just the compound but also the advancement and construction so these right here are radial tires ah and unlike a bias ply tire replies on radio tires run 90 degrees from the center but more importantly they have crisscrossing steel belts that sit on the crown now the separation of the crown in the sidewall allows these two areas to function independently because the sidewall isn't linked to the center of the tire it can deflect and roll helping keep the tire in contact with the road to maintain grip in the corners that's right Jerry and to prove it we are back at the track for a lateral g-test all right we're going to drive around this big circle whichever Tire can do with the fastest winds a good Tire will maintain grip even when you've got a bunch of lateral g-forces pushing against you I can't imagine a tire from 100 years ago is going to do all that good they hated lateral G's back then they didn't even know what they were first to set a baseline or Modern Tire Zach let's go foreign yeah with these big old Honkers on it heck yeah now let's see how the 100 year old model A tires do I'm a little concerned about this one this is definitely the jankiest setup looks like The Great Gatsby 9.88 this feels super soft and sloppy I mean you it immediately wants to just slide out you're kind of wrestling with it kind of feels like you're on ice it feels very weird so Zach's on the future tires and his time starts now 11.09 seconds I think we're starting to see a pattern here modern day tires are better than 100 year old tires and even tires from the future now for supposedly being the tire of the Future these things have been performing Pretty poorly so far and that's honestly to be expected when you have a tread compound and design meant for off-roading you see airless tires like these they don't exist yet as a consumer Tire these specific tires are Michelin tweeled and they're really designed to be used on utvs retire manufacturers are saying they're going to have road legal airless tires like these by next year and that's a pretty big engineering challenge because air has an important function in a tire it provides support for your car while also allowing enough deformation in your tire to maintain maximum grip over a large range of operating temperatures and now that's great and all until you get a puncture and then all that grip and support goes away hence the need for a tire like this so to try and make up for the deflection of the sidewall of a pneumatic tire the spokes right here are thinned out towards the edge and are designed to flex mimicking the air in a pneumatic tire but here's the thing these spokes are made of polyurethane and polyurethane doesn't transfer heat like air dust the air inside a tire helps dissipate heat away from the tread a polyurethane spoke can't transfer heat as good so that tread it gets hot and Hot and Hot and hotter and causes it to fail much quicker heat dissipation is one of the big reasons that we haven't seen any road legal versions of this tire yet but the obvious positive of these airless tires is that they don't need air you can't ever puncture them ever so we're gonna do one more test and that is the durability test we've got a mixed track setup some of it's going to be off-road there's a curve we have to run over and there's a spike strip just before the Finish Line whichever Tire gets the best lap time wins like gentlemen okay yeah no problem well let's get across the line before they go flat 58.29 seconds okay we gotta get this thing in before they go my tires guts are coming out now let's see how the modern tires do interrupt might lose the exhaust oh the curb's gonna be tough with these guys and across the Finish Line 49.69 seconds that was way more and we're across the line going off-road okay you gotta line up the slight strip hey we're getting away all right what's my time one zero six point three four hey that's not too bad and they didn't pop when we ran over the nails yeah that seems to be the biggest benefit to these future tires but I think they have a long way to go before they're going to be replacing the tires after that air is safe for now thank you guys for watching this video and everything else that we upload we upload all the time so make sure you hit the Subscribe button and the Bell so you don't miss anything go find a car and your friends and get a camera and make a video about you ruining like we do it's fun really fun bye