[Bad Anvil Garage]

Originally Posted by arpad_m

Hey Pkellarakos, to the forums

Bad Anvil Garage is spot on about the rears, you want 315/30/20 as it's closer to your standard SS tire size. 315 will fit, just make sure the main body harness on the driver side isn't rubbing and maybe relocate it if you want (I don't think this is still an issue with newer model years).

On the front, I'd go 275/35/20 instead of the 285/30/20 he suggested, for two reasons: first, the same argument of being closer to OEM sizing applies here as well (your suspension calibration and tire size in the tune is for the SS and not the SS 1LE), and second, 285/30/20 will slightly rub at full left steering lock on the driver side (there is a metal brace very close to the wheel well liner that'll cause some contact). You will not lose much, if any, steering agility by going with this alternate size in the front, I had both front setups on OEM 1LE wheels and never noticed a difference.

Valid points. I wanted the front tire diameter slightly smaller. Gives a more forward rake for a more aggressive stance. The 275/35R20 will match the diameter of the 315/30R20 within a couple 10ths of an inch so they'll be more even in height. Here's a great tire calculator site to help dial in your best fit:

https://tiresize.com/comparison/