Posted: 7/24/2006 3:11:27 PM EDT
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I don't get metric tire sizes. I assume that the first large number, LT285 refers to the tire width, the second number 75 somehow refers to the overall diameter of the tire (33" according to my trusty yardstick), and the last number 16 refers to my rim size in inches. So, when buying a tire (without needing to buy new rims), I'm limited by the first big number (285) and the last number (16). Right? This precludes me from buying, say, LT295/75R16s, doesn't it? Thanks. |
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295/75R16 295 is tire width in mm. 75 is the height of the sidewall in percent of the width 75% or 295 R is Radial (if theres a letter in front of it thats a speed rating. Ie ZR, VR, HR) 16 is rim diameter. For example my truck stock size is 215/75R15. I use a 255/60VR15 for summer. Its 2" wider, and 3/8" shorter than the stock size but is within acceptable limits. Go to tire You'll find something that will fit. |
Actual tire width from inside to outside. You can usually get different sized tires for your car. If you go too wide, it will rub the inside of your fender. If you get wider tires and keep the same "middle" number, then the tire will be larger in circumference as well. Again, you can get different sizes within reason. The only tire size that you are stuck with is the rim size, or the last number. If you buy different wheels, then you can change that size as well. My old Dodge Stratus ES had stock tires that I would call "fairly small". It looked a little funny, and the speedometer read about 12% high, from actual speed. I bought tires to replace that had a better fit to the eye, and were almost exactly 15% larger in circumference. Now the car looks better, and the Speedo is accurate to about 3% under actual speed. Perfect. |
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here are a couple links from tires.com you might find useful..... they've helped me a ton! Size Calculator Reading Tire Size (and other sidewall data) Good Luck! |