General household tire speed identification letters are: Q, R, S, T, U, H, V, W, Y.

Q stands for 160 km/h, R for 170 km/h, S for 180 km/h, T for 190 km/h, U for 200 km/h, H for 210 km/h, V is 240 km/h, W is 270 km/h, and Y is 300 km/h.

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