1 inch taller is only a 1/2" bigger on the radius.
Just to clarify how tires are measured, Since there seems to be some confusion.
The first number is the width in MM. I divide by 25.3 or 25.4 to get inches.
The middle number is a percentage of the width so you can multiply the width times the percentage to get the profile height. Then You can double the profile and add the rim size to get the overall height.
Example 335 mm = 13.24 inches
13.24 inches x .30 section percentage = 3.97 profile height
3.97 + 3.97 + 20 = 27.94 total height.
Usually in a 245/255 5 percentage point on the cross section equal a 1" jump in rim size. But on smaller and bigger tires that percentage is more drastic... Obviously.
Rodger
I agree with everything there..thanks Rodger. I wasn't confused..
Last edited by JohnC; 06-25-2008 at 06:00 AM.
Reason: spell check
Sorry to add any confusion. I wasn't confused either, but did not realize there were math whizzes here. When most people come in looking for tires they usually don't know what the numbers are for, and on top of that usually get the numbers backwards. Thank you Ironworks for clearing that up. That is exactly right, especially about the bigger the difference the wider the tire. What I meant about the manufacturer was just the fact that while all the tires should be the same width, the widest part may not be in the same place. Example, take your 285/30 19 tire. One brand will 11.22" across the tread (and will have more of a square profile) while another brand may only have 10" across the tread because their widest point is the bulge in the sidewall (which makes the tire look like it is stretched on the rim). The hieghts of both should be the same regardless.
What is the front rim and tire size on the cuda, Mike??
Thanks
John
Quote:
Originally Posted by vipercuda
Here are two cars we did with the back tires you are looking at using. The cuda as the 335 tire and the camaro has the 325 tire. I hope this helps. I would use the 335 tire.
Wow! thanks, pete! I think that looks amazing (and it's on a 55 chevy!) Isn't that enough sidewall?? especially if it's going on a smaller car like my 71 cuda...What do you guys think? Thanks again.
Hey pete, what front rim width and tire size does the 55 Chev have?
The front tires on the 56 are 255-35-19 on an 19x8 rim (285's are to wide for a 8" wheel)
The chevelle we have is running a 285-30-19 on a 19x10 in the front with a 345-25-20 in the rear.
I thought the 335-30-20 was a little tall and didn't fill out the rim good.( 12" rim looked almost to wide for the 335)
345-25's fit the rim better for us
Ok, if I go with the 335/30/20 on the 20x12 on the rear,
what tire match do you guys like better on the 19x9.5 front
between a 265/35/19 or a 275/35/19??????????
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