…P245/40R18 or LT315/70R17. But what does it mean when the tire says "P245/40ZR18"? For that, you need to know a little bit about speed ratings. Speed ratings on tires are expressed in letters and are generally listed along with the load index for a tire after the size, for instance…
T, Z, W...These letters appear on a tire, but what do they mean? Speed ratings can be a little confusing. I get many calls like this one: "I have an 08 BMW 328i and I need a Z-rated tire." To be honest, Z-rated used to mean a lot more than it does now. When speed ratings first came out, Z…
Share on Facebook Share on Twitter Share on Pinterest Email Page to a Friend Wheel Tech: The Custom Assembly of O.Z. 3-Piece Wheels Tire Rack is the North American distributor for O.Z. Racing wheels. This partnership includes O.Z.'s prestigious, custom three-piece wheel program. O.Z.'s custom…
…tires and accept the O.E. Tire Pressure Monitoring System (TPMS) sensors. If you prefer the look a wider tire, both 235/45-18 and 245/40-18 are compatible sizes. The 235/45-18 won't provide enough increased width to make a noticeable difference. Scion TC FAQ: * What does 18x8 ET45 mean? 18x8…
…rim widths of 1" to 4" possible. Tire Rack's complete, in-house inventory of all 3-piece wheel components means quick turn-around with assembled wheels shipping within 1-2 days of order receipt. Precise wheel assembly is performed at Tire Rack using an exacting process that maintains…
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