How tall is a 285/70R18 tire?

A 285/70R18 tire is about 33.7 inches tall and 11.2 inches wide and mounts on 18-inch wheels.

Is 285/70R18 a 34 inch tire?

Yes, with an overall diameter of about 33.7 inches a 285/70R18 counts as a 34-inch tire.

At stock height it typically fits: Ford Super Duty. Other trucks need a leveling kit, a lift or trimming.

A 285/70R18 tire is about 33.7 inches tall and 11.2 inches wide and fits 18-inch wheels, so it counts as a 34-inch tire.

Truck	Stock height	Leveled	Lifted (~6")
Ford F-150 2015-2024	Won't fit like this	May rub at full lock	Fits clean
RAM 1500 2019-2024	Won't fit like this	Fits clean	Fits clean
Chevy Silverado 1500 2019-2024	Won't fit like this	May rub at full lock	Fits clean
GMC Sierra 1500 2019-2024	Won't fit like this	May rub at full lock	Fits clean
Toyota Tacoma 2016-2023	Won't fit like this	Won't fit like this	May rub at full lock
Toyota Tundra 2022-2024	May rub at full lock	Fits clean	Fits clean
Ford Super Duty 2017-2024	Fits clean	Fits clean	Fits clean

Typical values with stock wheels and offset. Wider or lower-offset wheels change the result. Use the Will it rub? calculator for your exact setup.

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How tall is a 285/70R18 tire?: A 285/70R18 tire is about 33.7 inches tall and 11.2 inches wide and mounts on 18-inch wheels.
Is 285/70R18 a 34 inch tire?: Yes, with an overall diameter of about 33.7 inches a 285/70R18 counts as a 34-inch tire.
Will 285/70R18 fit my truck without a lift?: At stock height it typically fits: Ford Super Duty. Other trucks need a leveling kit, a lift or trimming.