Widest tires on the 20" Foundry/GT Premium wheels?

[spankaveli]

I've done some searching on here and a few other boards but haven't really found my answer since most people seem to upgrade but these were an upgrade for me from the factory GT/CS wheels.

I'd love to be able to go 305/30-20 since they'd be (almost) the exact height as the 265/35-20s that are on it now.

In case I'm not referring to them properly, these are the wheels that are being referenced;

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[Terminator2]

Technically a 275 is the widest that is recommended for a 9" wide wheel (possibly a 285 depending on tire manufacturer). That said I've seen 305 35 20s on the 9" wide wheels. Because of it being squished though typically contact patch is no larger than a 275 on that same 9" wide wheel.

 

[spankaveli]

Technically a 275 is the widest that is recommended for a 9" wide wheel (possibly a 285 depending on tire manufacturer). That said I've seen 305 35 20s on the 9" wide wheels. Because of it being squished though typically contact patch is no larger than a 275 on that same 9" wide wheel.

Thank you. That affirms what I was thinking. I suppose 285 is better than 265...

 

[MSMStannyl]

I have the same wheels and am my factory P-Zero's are just about toasted (at 22k miles now but probably have another month or so left). I've been looking around at tires as well.

A while back, I stumbled on a post by another guy who had the same wheels. He replaced the factory 265/35/20 PZero's with 275/35/20's I believe (I know the width was 275 but can't remember if the height was 35 or 30). He said they worked perfectly with no problems or rubbing. If I recall correctly, he had replaced the PZero summer tires with Conti DWS A/S tires, something I may do as well since my car is my DD and I live in Baltimore.

305 seems way too wide for those wheels. I would definitely check with a tire expert on that. Also, are these 9" wide or 8.5" wide? I can't remember...

 

[2015 Silver GT]

They are 9" wide.

 

[Terminator2]

I have the same wheels and am my factory P-Zero's are just about toasted (at 22k miles now but probably have another month or so left). I've been looking around at tires as well.

A while back, I stumbled on a post by another guy who had the same wheels. He replaced the factory 265/35/20 PZero's with 275/35/20's I believe (I know the width was 275 but can't remember if the height was 35 or 30). He said they worked perfectly with no problems or rubbing. If I recall correctly, he had replaced the PZero summer tires with Conti DWS A/S tires, something I may do as well since my car is my DD and I live in Baltimore.

305 seems way too wide for those wheels. I would definitely check with a tire expert on that. Also, are these 9" wide or 8.5" wide? I can't remember...

They were 275 35 20. About 2/10" taller than the stock 265/35/20 which is nothing. A 285 35 20 would also work. It's about 1/2" taller than stock.

 

[sese]

305's do not work, been there, done that. So 275 is the widest you can go on those wheels based on opinion of the tire guy at my shop.

 

[MagneticGT15]

I have 285's on mine and they look fine but need more rubber out back as I am putting on a roush TVS. Really wanted these wheels to stay on the car so I ordered the black foundry 20x10's for the rear from AM and getting them powder coated magnetic on the inlays to match. Going with a 305 on the rear. Hope its enough. Lol

 

[Need4SpeedMotors]

275/35/20 or 285/35/20 is what I recommend widest on factory.

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