255's on an 8" wheel?

[96_rs]

im looking into getting a new set of tires (bf goodwrench g-sport t/a's) and i would like to get a set of 255/45/17s but im not sure if they will fit on my wheels - i have some 17"x8" cragars...any suggestions....should i step down to a 245? any thoughts on these tires?

thanks

- trey

[Lurieh]

Re: 255's on an 8" wheel?

You should be fine with a 255/45/17 on a 17x8 width. The manufacturer specs show your specific tire and size will fit on any wheel between 8-9.5" in width. The width difference between the 245, and 255 is negligible, but the 245(assuming 245/45/17) will be a good bit shorter. This will result in the standard gearing/odometer/speedometer changes that you may, or may not want.

[96_rs]

Re: 255's on an 8" wheel?

cool....looks like i will be ordering some tires then

[Nikos95]

Re: 255's on an 8" wheel?

Well the 255/50/16 is the max on the factory 16x8's so I wouldn't think a 255 in a 17" would be a problem.

[Lurieh]

Re: 255's on an 8" wheel?

I tend to go by the manufacturers specs on a per tire basis. For the most part Nikos95 is correct, that a 255 width in any size(16, 17, 18) will fit on an 8" wide rim. However, you have to keep in mind the aspect ratio as well. A 255 width tire with a tall sidewall(255/50/16), will fit better on an 8" rim than a 255 width tire with a shorter sidewall(255/45/17).

Here's an example:

A 315/75/16 tire will fit an 8" wide wheel easy, but a 315/40/16(Not an available size) would have no chance of fitting an 8" wide wheel.

Here's another:

Specs for BFG G-Force Sport

255/50/16 fits 7-9" wheel width - An 8" wheel sits right in the middle
255/45/17 fits 8-9.5" wheel width - This tire sits at the lowest end of the recommended widths
255/40/17 fits 8.5"-10" wheel width - This tire won't even fit on an 8" wide wheel

Even though the widths are the same, the recommended wheel widths are different due to the aspect ratio(255/X/17)


You can't blanket the comment and say, "Well, my 28x11.5x16 slicks fit on my 16x8 rims, so your 315/40/16 should fit fine."

However, with the relatively small width tires(255) you should be fine with an 8" rim regardless of aspect ratio.

[T-Mill]

Re: 255's on an 8" wheel?

why wouldn't that fit on an 8" wheel? the aspect ratio is just a percentage of the width of the tire... if you can fit a 50 or 45, Why couldn't you fit a 40 or 35 even?

what does the profile of the tire have to do with the rim size?

[Lurieh]

Re: 255's on an 8" wheel?

why wouldn't that fit on an 8" wheel? the aspect ratio is just a percentage of the width of the tire... if you can fit a 50 or 45, Why couldn't you fit a 40 or 35 even?

what does the profile of the tire have to do with the rim size?

In this specific case, yes, a 255/45/17 will fit on an 8" rim. Why won't a 255/40/17, or 255/35/17 fit? Read this:

http://www.dunloptires.com/care/widthRatio.html

You are correct that a 255mm wide tire in any aspect ratio should PHYSICALLY fit on an 8" wide wheel, but the above link shows what happens when you try to stretch a low profile tire on a too-wide wheel.

[T-Mill]

Re: 255's on an 8" wheel?

got it, will fit, but difficultly and dangerously.