Is the question diameter or width?
I am also pondering a similar question. Or I think it is similar. I am questioning the gain or lack of by increasing width.
Tire size dictates a lot on a build so I am agonizing over the rear tire size. Diameter is locked in to 27 to 28" for me. I want to keep the proportions right for a car with a big back end (1969 Torino fastback). I can fit a 285 40 19 out back and don't even think I need to touch the tubs (I run a shorter 285 40 17 now). If I do a 4 link (copy Jasons DSE install) and tub it then I could go all the way to 345.
I plan on taking the car to track day events and maybe some open road events.
I would think proper ear suspension set up makes the most difference along with track width. With DOT rubber how much lateral grip am I giving up (any really) with a smaller diameter tire 285 vs 345?
In an overly simplified scenario with all things being equal. When you increase tire size but maintain overall track width does it really make that much of a difference?
|