Description
Ultra-High Performance in 305/30R21, load index 104, Y-rated (186 mph). Summer compound. Sold per tire.
The widest fitments in the range, built for high-output cars that put real load through the outside edge. Asymmetric tread with a continuous inboard rib for straight-line stability at speed.
Reading the size
305/30R21 — section width in millimetres, then aspect ratio as a percentage of that width, then rim diameter in inches. The 104 load index and Y speed rating must meet or exceed what the manufacturer specified for your car; going below either one is an inspection failure and an insurance problem.
Mounting
We can mount and balance these to wheels bought in the same order, transfer your TPMS sensors, and ship the assembly ready to bolt on. Tires ordered on their own ship ground, uninflated.
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