305/30 vs 305/35 on gt350 non R

[Tonymustang302]

So i have had a lot of time to read during this lockdown and was looking at an interesting article

How to PROPERLY select and size TIRES for PERFORMANCE - Page 5 of 5 - MotoIQ

STEP 4: CHOOSING A WHEEL Wheels are an expensive investment that will affect the handling, performance, and yes, looks of your car; so it’s important to do your homework before…

motoiq.com

about picking the right tire for your vehicle. I was always wanting to run 305/30/19’s square, but since my gt350 came with 295/35 and 305/35’s should i be sticking with 305/35’s on a square set of apexs’s?. Will the 30 mess with the overall electronics?

 

[byronj]

No, I run the stock tires on my street set up and R sizes on my track set. MPH might be slightly off but that’s never been a concern of mine

 

[VUDU V8 Steve]

I dont think there is any "electronic" problem with that, I ran 305's all four on my stock heavy rims, before getting set of four APEX 11" wheels, & front spacers for rotatable square set-up..
The car is a bit lower with the the 30 sidewall , of course.

 

[APEX Wheels]

No issues if you run 305/30-19 all around. We encourage that size vs 305/35 due to a vastly superior selection of tires available.