Biggest tire on an 18X9?

[The Stickman]

Ok I have a set of 18X9's coming. My question is what is the biggest tire that will fit on a 9 inch wide wheel? The TireRack says a 275 and other sources say a 295. now I have more than enough room in the back(15 inches in the wheel well) so that's no concern. I will be running slightly smaller tires on the front if I can run 295's. If not I may run 275's all around. But right now the car looks like it sits a bit nose high. According to measurements at the rocker panel it's level but it does look nose high. So I would love a bigger tire at the back. And it might handle better with a bigger tire since it is a big car with more weight at the rear.

[4086D9]

I would run a max of a 275 on the 9" wheel. Anything wider makes the tire"puff" out around the wheel.

[b-man]

The recommended rim size for a 275/40-18 is between 9 and 11 inches.

Here's one mounted on a 9" wide wheel.

Anything wider on a 9" rim just won't look right.

https://static1.pt-content.com/images/pt/2008/12/OZRacingBlackpaintedwheelsfor64T4-1.jpg

[6'9"Witha69]

I wouldn't go over 275.

[FirstGenZq8]

i agree w/ the above replies; 275. i have 315's on 9.5" wheels, and while they fit fine they do bulge out a bit.

[The Stickman]

i agree w/ the above replies; 275. i have 315's on 9.5" wheels, and while they fit fine they do bulge out a bit.


Yea but if 315's fit on a 9.5 with a little bulge shouldn't 295's fit on a 9 inch rim? After all a 1/2 shouldn't make that big of a difference should it?

[b-man]

The 295s will fit fine, but I guess we're trying to point out that the look won't be what most would consider to be 'right'.

315s on a 9.5" wheel aren't really ideal either, but they'll work too just like 295s will on a 9" wheel.

You can stray a bit from recommended rim width for a certain size tire, but they won't work (corner) quite as well as one mounted on a rim within the recommended range. Mounting a tire on the widest recommended wheel for that particular size always works best, but we don't always have that choice.

[JRouche]

And various tires (manufactures) are smaller looking for the same number size. I have goodyear F1s and they are a largish tire. If you were to use that tire I would go with goodyears recommendations for wheel width.

Some manufactures tires look smaller and you can mount them up and they look great. But then yer always forced to use a similar "small" tire.

I have 285s on a 10" wheel, which is the measured rim width for that tire, and it looks ok. But a Sumi tire for example would look stretched. GY F1 has a measured rim of 9.5" for the 275. And a 10.5" rim for the 295. JR

https://static1.pt-content.com/images/pt/2009/01/wheels4-1.jpg

https://static1.pt-content.com/images/pt/2009/01/wheels2-1.jpg

[greencactus3]

i have 275s on a 9in here, and any wider of a tire will bulge.
these bfg g-force sports are already a hair bulging imo
https://static1.pt-content.com/images/pt/2009/01/CopyofP1110406-1.jpg

[Flash68]

Yep, I would not go more than 275 on a 9". I am running 275 on a 9.5" front.

[The Stickman]

i have 275s on a 9in here, and any wider of a tire will bulge.
these bfg g-force sports are already a hair bulging imo
https://static1.pt-content.com/images/pt/2009/01/CopyofP1110406-1.jpg


How do you like the G-Force Sports? That is what I am thinking of getting.