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Kia Stinger (CK) 2018-2023 Service Manual: 7. Uniform tire quality grading
Quality grades can be found where applicable on the tire sidewall between tread shoulder and maximum section width. For example: TREADWEAR 440 TRACTION A TEMPERATURE A Tread wear The tread wear grade is a comparative rating based on the wear rate of the tire when tested under controlled conditions on a specified government test course. For example, a tire graded 150 would wear one-and-ahalf times (1½) as well on the government course as a tire graded 100.Repair procedures Inspection 1. Turn ignition switch OFF and disconnect the battery negative (-) terminal. 2. Remove the fuse box cover (A). 3. Remove the starter relay (A). 4. Check for continuity between the terminals (30 and 87) using an ohmmeter.