On most stock trucks and SUVs, you can safely fit tires up to about 33 inches in overall diameter – or roughly one size larger than what came from the factory – without a lift kit, as long as the new tire stays within 3% of the original overall diameter and clears the wheel well … Read more
Can you safely run different size tires front and rear? Yes, only when the vehicle was designed that way from the factory (a staggered fitment). Otherwise, every tire must match. The two tires on the same axle must always match in size, and across all four corners the overall diameter should stay within roughly 3% … Read more
Yes, it is okay to mix two tire brands on the same axle when both tires match in size, tire type, tread depth, speed rating, and load index. Brand alone is less critical than these five specs aligning. On AWD and 4WD vehicles the rules tighten because the drivetrain is sensitive to even small differences … Read more
Putting the wrong size tire on your car affects almost every system on the vehicle, from the speedometer and odometer to the drivetrain, fuel economy, and braking performance. A tire that’s even one size different from the specification on your door jamb sticker can shift your speedometer by several mph, force your AWD differential to … Read more
Can you fit a slightly bigger tire on the same rim? Yes, you can fit a slightly bigger tire on the same rim, within two clear limits: stay up to about 20mm wider than your stock tire, and keep the new tire’s overall diameter within roughly 3 percent of the original. Go past those limits … Read more
A Blazer EV owner on Reddit walked into Discount Tire expecting a quick rotation and walked out confused: the shop refused service because the front tires had 4/32 inch of tread left while the rears still had 8/32. That is a 4/32-inch spread on the same axle, and it is exactly the kind of case … Read more
How many years can tires sit before they should be replaced? Most tires can sit unused for 6 to 10 years, but the National Highway Traffic Safety Administration (NHTSA) recommends replacing them at 6 years regardless of tread depth, and the U.S. Tire Manufacturers Association treats 10 years as a hard limit. Storage conditions matter … Read more
Yes, dry rot on tires is dangerous to drive on. Dry rotted tires are not safe because the cracks weaken the rubber’s structural integrity and can trigger a sudden blowout, especially at highway speeds. According to the NHTSA, faulty tires cause roughly 11,000 accidents every year in the United States, and sidewall cracking from dry … Read more
You just paid for a four-wheel alignment, and your tires are still scrubbing the inside edge down to the cords. If you’re asking why do my tires keep wearing unevenly after an alignment, the short answer is that an alignment only fixes three wheel angles; it cannot repair worn suspension parts, undo a non-adjustable rear … Read more
Most spare tires last between 6 and 10 years, even if they have never touched the road. The rubber in a spare degrades from heat, ozone, and UV light sitting in a trunk or under a chassis, and most tire manufacturers including Michelin, Goodyear, and Continental recommend replacement at the 10-year mark regardless of tread … Read more