[ColorBlind]

I have a 2019 2SS 1LE. Looking to switch to a square set up just for track days. Plan on running a 19x10 et20 all the way around. I know I can fit 285 on the front. Has anyone ran anything wider? Would be awesome if a 305 would fit on all 4 corners but I doubt that will work. Planning to run the 285/35/19 Goodyear Eagle F1 Supercar 3R unless I can fit something wider without adding camber plates and spacers. Thanks for the input.

[Msquared]

A 305/30/19 will work on a 19x10 wheel. It's a bit of a pinched fit and usually 1/2" narrower than the narrowest rim width recommendation by tires manufacturers for that size, but it will work. Many, many people run this exact combo on the front of SS 1LEs for autocross use because there isn't a good 285 or 295 made in a competitive tire. In fact, the vast majority of those cars are using 305/30/19 Falken RT660s up front these days and 315/30/19 on the rear 19x11, including me. At Nationals this week in F Street, out of 20 Camaros entered (some with two drivers), only two were not running 305/30/19s up front. The two cars that ran 285/35/19 Yokohamas placed very well, but since that's a different brand tire you can't make a direct comparison. Suffice to say that either size can work well.

In the SC3R, you could run either the 305/30 or 285/35. The 285 is actually taller, which is typically a disadvantage, but it will be a better fit on the rim width. Given that and that both sizes are available in your tire choice, and considering that both have proven to work well in a competition environment, I'd probably just opt for the 285/35/19 since you'd be inside the recommended rim with range with it.

[Aquarius]

I just recently put 295/35/r19 with a 10.5" wide wheel on my 1SS. The current pictures are bordering on bad, but when I have time, and a new camera, I will take some better pics and do a better write up.

https://www.camaro6.com/forums/showthread.php?t=606972

One thing to note that I did not mention on the original post (but I will when I redo it) is that the tire is VERY close to the suspension, and if I had bought square-cornered tires, I would have had rubbing issues. Luckily, the Continental Extreme Contact Sports have a rounded profile and that allowed them to fit nicely in the space available.

[Msquared]

Originally Posted by Aquarius

I just recently put 295/35/r19 with a 10.5" wide wheel on my 1SS. The current pictures are bordering on bad, but when I have time, and a new camera, I will take some better pics and do a better write up.

https://www.camaro6.com/forums/showthread.php?t=606972

One thing to note that I did not mention on the original post (but I will when I redo it) is that the tire is VERY close to the suspension, and if I had bought square-cornered tires, I would have had rubbing issues. Luckily, the Continental Extreme Contact Sports have a rounded profile and that allowed them to fit nicely in the space available.

That's affected by more than tire width, though. Those tires are even taller than the 285/35/19; and at 35mm offset with a 5mm spacer and 1/2" more rim width, your inside rim edge is about 22mm closer to the inside than the OP's would be.

[Aquarius]

Originally Posted by Msquared

That's affected by more than tire width, though. Those tires are even taller than the 285/35/19; and at 35mm offset with a 5mm spacer and 1/2" more rim width, your inside rim edge is about 22mm closer to the inside than the OP's would be.

This tire/wheel's diameter is @ 1% larger (696mm to 689mm) than what comes with the Camaro SS. It has no adverse affects on the car, and in fact is a suggested alternative size for the stock wheel/tire combo that comes with the Camaro. And seeing how it is a wider wheel, yes, it will be closer to the suspension...the extra tire has to go somewhere. OP asked how wide of a front tire can go on the front. I got a 10.5" wheel with 295/35 to fit just fine. It has about 1cm (10mm of poke) in the front and back. The Continentals were designed for a 10.5" wheel, so the measurements provided for the tire come form it on that size wheel.

I understand the OP mentioned they planned on using 10" wheels. I do not know how committed to a 10" wheel he was with the word "planned," so I provided the information above.

[Msquared]

Originally Posted by Aquarius

This tire/wheel's diameter is @ 1% larger (696mm to 689mm) than what comes with the Camaro SS. It has no adverse affects on the car, and in fact is a suggested alternative size for the stock wheel/tire combo that comes with the Camaro. And seeing how it is a wider wheel, yes, it will be closer to the suspension...the extra tire has to go somewhere. OP asked how wide of a front tire can go on the front. I got a 10.5" wheel with 295/35 to fit just fine. It has about 1cm (10mm of poke) in the front and back. The Continentals were designed for a 10.5" wheel, so the measurements provided for the tire come form it on that size wheel.

I understand the OP mentioned they planned on using 10" wheels. I do not know how committed to a 10" wheel he was with the word "planned," so I provided the information above.

I wasn't contradicting you or saying that this size shouldn't be considered. I have no doubts that a 295/35/19 will fit up front. Its about 0.4" taller than the stock 1LE tire size, but shorter than the regular SS front tire.

My reply was more in response to your warning:

One thing to note that I did not mention on the original post (but I will when I redo it) is that the tire is VERY close to the suspension, and if I had bought square-cornered tires, I would have had rubbing issues.

My point being: the OP would have more clearance than you with either 285s or 295s on his intended wheel, so he doesn't need to worry.

In general, taller tires raise the CG and roll center of the car and will therefore cause more weight transfer in cornering and braking, which is undesirable. If all else is equal, I would therefore choose the shorter tire. In this situation, the 295 is a bit wider but a bit taller than the 285, and the 305/30 is significantly wider and shorter but also a bit pinched on a 10" wheel. I would guess than the 305 would have better single-lap speed but would overheat more and possibly wear a little strangely during extended sessions. Also, the SC3R doesn't come in a 295/35, so it's not really in the running as a choice for the OP. For those reasons, I think I would opt for the 285/35 for the OP's situation but the 305/30 for autocross use, although it's probably a pretty close choice either way.

[ColorBlind]

Thanks for all the info. Very helpful. I already have the 19x10 wheels so I plan to stick with them rather than buy another set just to go to a 10.5. I would love to put a set of Hoosier R7's on the car but the 19" size jumps from a 265 to a 295. On my previous track car I found the Hoosiers to be much wider than other tires at the same size. Feels like 265 would be too small and 295 would be too wide. I guess I will stick with the Goodyears and maybe move up to the 305/30/19. Thanks again for all the great input.

[Msquared]

Originally Posted by ColorBlind

Thanks for all the info. Very helpful. I already have the 19x10 wheels so I plan to stick with them rather than buy another set just to go to a 10.5. I would love to put a set of Hoosier R7's on the car but the 19" size jumps from a 265 to a 295. On my previous track car I found the Hoosiers to be much wider than other tires at the same size. Feels like 265 would be too small and 295 would be too wide. I guess I will stick with the Goodyears and maybe move up to the 305/30/19. Thanks again for all the great input.

At least for the Hoosier, the 265/35/19 has no problem going on a 19x10. Hoosier's own rim width recommendations for that tire are 9.0"-10.0".