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  • What Does "ZR" Mean?

  • …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 245/40R18 93H. 93 is a load index and the "H" is the speed rating. Together, the load index and speed rating make up what is called the service…

  • Best BMW Tires for the Summer? My Top Tire Recommendations

  • …a bit more clearance compared to the older E90 3 Series models, so you can use the stock 225/45R18, 245/40R18 or shorter 245/35R18 sizes with no problem. I personally would lean towards 245/40R18 to keep the same overall diameter while slightly increasing the width compared to the stock size."…

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