TireMileage guidesTire guides backed by NHTSA data and cited sources https://tiremileage.com/guides/2026-10-25T00:00:00Z TireMileage What does a tire treadwear rating mean?https://tiremileage.com/guides/what-does-treadwear-rating-mean/2026-10-25T00:00:00ZA treadwear grade is a relative wear-rate index set against a government control tire, not a mileage figure. How UTQG is tested, what 600 means, and 3,020 NHTSA-rated lines compared. Treadwear rating vs. mileage warrantyhttps://tiremileage.com/guides/treadwear-vs-warranty-mileage/2026-10-25T00:00:00ZUTQG treadwear and a maker’s mileage warranty are different things and don’t convert into each other. Maker-published warranty tables matched against NHTSA grades, plus how pro-rata claims work. How to read a tire sidewallhttps://tiremileage.com/guides/how-to-read-a-tire-sidewall/2026-10-25T00:00:00ZDecode a tire size like P225/60R16 97V, the load index and speed rating, the UTQG grades and the DOT date code, using Tire Industry Association, Michelin and federal sources. How to calculate tire cost per milehttps://tiremileage.com/guides/tire-cost-per-mile/2026-10-25T00:00:00ZCost per mile = what you pay for the set ÷ miles you actually get. A worked example with clearly made-up inputs, what to include, why warranty miles are an upper bound, and a calculator. When to replace your tireshttps://tiremileage.com/guides/when-to-replace-tires/2026-10-25T00:00:00ZReplace tires at 2/32 inch of tread, when wear bars are flush, on visible damage, and consider age. How to do the penny test and read the DOT date code, with NHTSA, TIA and USTMA sources. Tire traction and temperature grades explainedhttps://tiremileage.com/guides/utqg-traction-and-temperature-grades/2026-10-25T00:00:00ZWhat AA/A/B/C traction and A/B/C temperature grades measure, the exact federal test thresholds, what they don’t cover, and how grades are distributed across NHTSA’s database. All-season vs. all-weather vs. winter tireshttps://tiremileage.com/guides/all-season-vs-all-weather-vs-winter-tires/2026-10-25T00:00:00ZM+S versus the three-peak mountain snowflake (3PMSF), when winter tires are needed, the tread-life trade-off, and why UTQG treadwear grades don’t cover winter-type snow tires. How to make your tires last longerhttps://tiremileage.com/guides/how-to-make-tires-last-longer/2026-10-25T00:00:00ZCheck pressure monthly, rotate every 5,000–8,000 miles per your manual, keep alignment and balance in check. What NHTSA, TIA and USTMA each recommend, and the rotation patterns. How much do tires cost?https://tiremileage.com/guides/how-much-do-tires-cost/2026-10-25T00:00:00ZWe don’t quote tire prices we can’t source. What actually drives tire cost, what an installed quote includes, how to compare quotes fairly, and why cost per mile beats sticker price. How to find the longest-lasting tires for your sizehttps://tiremileage.com/guides/how-to-find-longest-lasting-tires-for-your-size/2026-10-25T00:00:00ZA practical method using NHTSA treadwear grades, maker warranties and maker test claims, worked through for 225/65R17 (35 graded lines), with the limits of each signal.