Quote:
Originally Posted by Omega Doom
because manual cars hit the tires harder on launch so they can use the extra sidewall to cushion the shock there is a couple of corvette guys running 275/40/17s over on the corvette forums one runs in the 9s the others running in the 10s with bolt ons and all of the autos also one running 315/35/17s running in the 9s hope this helps but honestly you dont need a 305/45 on a NA auto car it may look cool but will run slower save those for boosted cars  |
These N/A Manual cars need the gearing more than the sidewall. The rear is strong and you shouldn’t be popping the clutch so I never was concerned with the shock. I didn’t have traction problems either
What you’re saying is true only for an actual wrinkle wall slick. So it wrinkles down close to a 26” on launch and then grows to more a 28 on the back end. Those tires are strip only, no street anyway
A dot bias ply, stiff walled bias ply, or radial that doesn’t work. We don’t have rear gear options. The 28 is much slower.
A 275/40r17 is more than enough tire for a bolt on m6 SS.
That’s a 26”…