TireCalculatorPro

Tire Rating Calculators

Decode UTQG ratings, DOT date and plant codes, look up speed and load index, compare treadwear ratings.

UTQG Tire Rating Decoder
Decode any UTQG code — treadwear number with lifespan estimate, traction, temperature.
Tire Treadwear Rating Comparison
Compare two UTQG treadwear ratings to estimate relative lifespan difference.
Tire Age from DOT Code Calculator
Enter the 4-digit DOT date code from your sidewall to find your tire's exact age.
DOT Year Code Reference Chart
Complete chart of all DOT year codes from 2000–2030 with week-to-date lookup.
Full Tire DOT Code Decoder
Decode every section of the DOT code — plant ID, tire size code, and manufacture date.
Tire Plant Code Lookup
Look up any 2-character DOT plant code to find the tire's manufacturing location.
Pre-2000 Tire DOT Code Decoder
Decode older 3-digit DOT date codes from tires manufactured before 2000.
Tire Sidewall Code Decoder
Decode the full tire sidewall code — width, aspect ratio, rim, load index, and speed rating.
Tire Speed Rating Lookup
Look up any speed rating letter (H, V, W, Y) — max speed in mph and km/h.
Tire Load Index Lookup
Look up any load index number (71–130) — maximum load capacity in kg and lbs.
Tire Load Range Chart
Full load range chart (C through G) with max load, ply rating, and inflation data.
Vehicle Tire Load Capacity Calculator
Calculate total load capacity for a vehicle based on tire load index and count.
Tire Load Rating for Towing
Find the minimum load index required to safely tow your trailer weight.
Tire Load vs Inflation Pressure Table
Lookup table showing how load capacity changes with inflation pressure for LT tires.
XL vs SL Tire Load Index
Compare XL (Extra Load) and SL (Standard Load) index values side by side.
Tire Speed & Load Index Lookup
Look up speed rating and load index together for any tire sidewall code.

Related Calculator Categories

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Frequently Asked Questions