I'm not sure. I read incorrect specs I reckon. I went back and checked. I see 245 is good on an 8" rim and a 275 recommends 9.5" (close enough). So it's all good.

Yea a 275 is a little meaty for a 9" wheel but it's nothing crazy.

remmber-8"wide rim is 9"wide & 9" rim is 10" wide-(lip to lip) look at my tires;front's have 8.6"tread & rear's have 9.8" tread....still room for a bit wider.

I like your. I'll be doing this... unless the 19's get here before I need tires.

Then again tires are so different in width specs and aspect ratios from one manufacturer to another that it's always a guessing game. I have a friend with a BMW that had 295/30R19 Falkens in the rear and was rubbing. He later changed them with Pirelli 285/30R19s in hope of solving the rubbing issue (because they should be both slightly narrower and slightly smaller in overall diameter) only to find out they're actually a little bigger and rub even worse...so imagine how surprised we were when they were supposed to be actually smaller.

I have seen examples of this many, many times. Two tires from two different manufacturers with the same exact sizes on them, and they are sometimes not only slightly different, but VISIBLY different.

Thought they measured rims from inside of the lip to inside the lip? That's how my Forgelines are measured.

they do (bead to bead) is width measurement spec./but overall lip to lip spec,is about 1/2" on each side-making them an inch wider.
your 19x12's are actually 13" wide overall-that's why the tread on your 345's match the overall width @ 13"

Example Attachment 106067


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Don't mean to over-emphasize,but a lot of really good mechanics don't know this.Attachment 106068Attachment 106069Attachment 106070


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I knew that and I'm a crappy mechanic. ;-)

I knew that too. Wanted to see his reasoning. Was being nice on how I asked the question. ;) The outside measurement don't always hold true with some rims. Rims with the lip for the clip-on wheel weight like he pictured, yes. But if the rim lip is smooth, they measure less. If you have rim locks. They measure even more.

My rims are as smooth as a Ken doll.

Attachment 106071 appears to hold true for Forgeline Wheels.


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not sure if this has been posted already but I thinks it's a pretty big deal when it comes to tires, especially meaty tires.

the pss tire is now available in 305/35/19.
it's out in this size due to it coming on the new gt350

now u don't have to sacrifice the taller overal diameter with a 30 profile rear. it's the best option if u want to keep it drag/strait line traction and ur horizontal side to side traction.
until now the the 295/35/19 was the best option to go wider an keep ur hight but that size is way more expensive then the 285/35/19 and not as cool as a 305.

Food for thought for on the front. Hmmmmm.