255/35/19 and 305/30/19, question

[Gumby_F80]

Why are more people not running this set up? It seems like the delta between the two tires is more similar to OEM than the 265-305 set up and would cause less ECU interference.

Thoughts anyone? -- Beside the obvious that people just want more tire up front?

[BitchinManWheels]

Originally Posted by Gumby_F80

Why are more people not running this set up? It seems like the delta between the two tires is more similar to OEM than the 265-305 set up and would cause less ECU interference.

Thoughts anyone? -- Beside the obvious that people just want more tire up front?

The car supposedly adapts to any tire diameter ratio you put on your car. Thus, putting on non OEM spec tire ratios is fine for the traction control, it will "learn" the new tires.
I have 265/285 street and 265/295 track. I can't tell if it intervenes more for either.

[Justin.AutoTalent]

Originally Posted by BitchinManWheels

The car supposedly adapts to any tire diameter ratio you put on your car. Thus, putting on non OEM spec tire ratios is fine for the traction control, it will "learn" the new tires.
I have 265/285 street and 265/295 track. I can't tell if it intervenes more for either.

^ I've had many tire set ups and I can say the same.

The only time I experienced any real intervention was when I ran a 265/35/19 | 295/30/19. In this tire combination, the front was taller than the rear. MDM, the car did not drive the same as when I had the 305/30/19.

Wider tire in the rear yes, however, from my seat time with the two different set ups (both Yokohama AD08R) you could feel it, especially in GMR.