Tire Size
 

What's the widest tire I can put on my 2011 GT Premium with 19 inch rims?

Depends on how wide the rims are, and the offset.

Stock Brembo 19x9 wheels are good for up to 275 wide tire. But if you go aftermarket with 9.5 or 10" wide rims you can go wider, particularly on the back. If you have the 19x8.5 wheels you can get away with 255 wide tires, but that's about it.

I have 19x9.5 on mine with 275/40-19 for track days. I cold have gone up to 285/35-19 on these, but chose 275 for various reasons.

I have 275/40r19's on stock 19x8.5 wheels no problems

I'm looking for same info. Rear rims are 19x9.5 and have 275/40 on them stock. Can I get a 295/35 on that rim? Can I get bigger than 295's? The rims are on 2015 GT premium.

Look at the tire specs, it should give you a rim size range. 285/35-19 say rim width range is 9.5-11, and I personally wouldn't go any wider on that rim.

You're in luck!

If you have a few bucks to spend, go talk to the fine folks over at Vorschlag. The can set you up with custom offset Forgestars that will allow you to run up to 305 in the front and 315s in the rear...insanely cool.

http://www.vorshlag.com/index.php