Toxix

Because of the confusion I've decided to email Hankook in regards to the wheel/rim size concern.
Heres the response I've recieved:


"Hello, The Best.
Thank you for your interest in Hankook Tires. The correct rim width is 9.5". Or the recommended rim width range is between 9.0" and 11.0". So you cannot use the current rim. I hope this helps. Thanks."


Hankook Tire Canada Corp.
30 Resolution Drive, Brampton, Ontario L6W 0A3

MustangFirstCar

Generally the rule I was taught to stick with is the tire can be half an inch less then the wheel width or 1.5 inches more. 275s are like 2 inches wider then the rims, which means they stick out about an inch on either side of it.

STANGmole

Most (all?) of the 19" 275 tires I've looked at say you can go a minimum of 9" rims. That's why I went with the FRPP track pack brembo wheels. I can run my stock 245/45/19 size tire with no issues....or if I decide to go wider later on, upsize to 275s in back for a staggered setup on the same rims. Most other wheels are 9.5" wide (too wide for the stock 245s) or 8.5" wide (too narrow for 275s).

Norm Peterson

With 9.5" as the so-called "measuring width", that's to be expected. You (and the car mfrs!) do get a little leeway on rim width either side of the measuring width.


Norm

Ricardo

I have 255 series Nittos on my front wheels. They are 9". My 285 on rear are on a 10" rim.
Running 275 on 8.5" rim?
You have to do a cost estimate here.
Hospital bills from tire failure on busy freeway=x
Wider rims to fit tires properly=x
Narrower tires to fit rim properly=x

Two of these choices are within most people's price range.

157dB

I'll let you know how the 275 on my 8.5s turn out.
So far, so good. No excessive heat during long
sustained high speed trips as indicated by the
IR heat gun...

bigblue95z

You got an update on this 157?

eolson

Toxix, when I started using ultra high performance all seasons during the winters to drive in cold dry weather only, I went with 275/40/18's in rear only on my stock 8.5x18 bullits and was told cheating up one size from recommended 255 in rear to a 275 was OK since the sidewall pressure is not huge in the rear, and the wider patch was superior in dry cold weather.

Good advice, the tires are still wearing very evenly in back, and grip very well for traction even in mid twenties dry street conditions. I have 255/45/18 up front. Ther is a .3" height difference, the back being shorter, but it isn't noticeable, and it's winter, so it's about dry grip and rubber patch contact, and the Goodyear F1 eagle D3's ultra high performance all seasons, along with three other brands, out perform dedicated high performance winter tires on dry and wet pavement for grip, but not ice and snow obviously. 275 is the widest on the planet for 18" in the all seasons I could find. My summer set is 285 and 255 in the Nitto 555's. They last a long time and grip well in 62 degrees and above.

I'd go ahead and cheat the rears. Erik

Toxix

Nice, nice, good post.

Thanks for the help, 275s on the 8.5 wheel doesn't seem too bad, had it for a while and it doesn't look too bad either.

Ride seems to be okay as well.

gmoran1469

I've got 275/40's on some 18x9.5's and the response increase of the stock rims/tires is amazing. I was planning on running the stockers on the street but once I felt the difference the wider tires with the shorter sidewall made on a wider rim I couldn't take them off. Been running Nitto NT-01's on the street ever since and I plan on getting a set of 275/40 NT555's or NT05's once they wear down (after this track season probably).