Whats the widest running tire?
Whats the widest running tire? Everyone knows shoes, and clothes...some tend to run big some tend to run small. Meaning one brands small is like another brands medium. I have come to conclude, tires are the same thing. The difference between my 275 sumitumos and my 275 gsd3's was alot. The gsd3's were a way wider 275. Does anyone know how I could go about finding out if there is a tire that runs even larger than the gsd3 does in a 275. 285's are too wide, otherwise I wouldnt be asking this. Thanks alot guys!!!! 
Unfortunately GSD3s only go to a 285 in 18 
they do offer them in 315 (ZR1) in 17 inch. They don't make them in 06 C6 Z06 size (325 19), but you can get Michillen Pilot Sports in 315, 325 and 335 in 18 diameter. I really wish Goodyear offered them in larger sizes.
they do offer them in 315 (ZR1) in 17 inch. They don't make them in 06 C6 Z06 size (325 19), but you can get Michillen Pilot Sports in 315, 325 and 335 in 18 diameter. I really wish Goodyear offered them in larger sizes. 
I dont know why everyon is saying 18" is that what they are for? for the most part the GSD3 will be the widest tire you will find there is one thread on here and someone measure the 315 off the rim and it was something crazy like 10.5-11". I run the sumitumo 315's and havent had to change a thing, still have my bump stops and everything. just have to lift the car from the axle to remove the tires, and they only rub on onramps for about 3/4 of and inch on the inner part of the wheel well.
