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Nitto NT421Q - 225/55R18

NT421Q 225/55R18 Tire Specs

Size Diameter Width Rim
Range
Measured
Rim
Tread
Depth
Load
Range
Max
Load
Max
psi
Max
Speed
Weight Sidewall
Letters
Revs/Mile
225/55R18
102V XL BSW
27.76" 9.17" 6-8" 7" 11.8/32" Extra Load 1874 lbs 50 psi (V) 149 mph 30 lbs Black 748 Show Specs
75,000 MileTread Warranty
Nitto NT421Q 225/55R18

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The Nitto NT421Q is a premier all season tire intended for use on SUVs and CUVs. It is a radial tire that provides excellent handling and traction in all weather environments including snow, while delivering a smooth ride. The NT421Q comes in H and V and W-speed rated sizes.

The 225/55R18 Nitto NT421Q has a diameter of 27.76", a width of 9.17", mounts on a 18" rim and has 748 revolutions per mile. It weighs 30 lbs, has a max load of 1874 lbs, a maximum air pressure of 50 psi, a tread depth of 11.8/32" and should be used on a rim width of 6-8".



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