This article is from the Toyota Tundra FAQ, by Steve Yee with numerous contributions by others.
People on the internet have switched out tires quite a bit. According to the
site www.bigtoytrucks.com, the largest tires fitted without major modification
of the Tundra's suspension or frame was a 285/60-18 Bridgestone Dueler with 18"
Antera Rims. Some other owners have used 285/75-16 BF Goodrich All Terrain
TA/KO's on the stock 16" rims with some rubbing against the mud flap extension
and/or Ivan Stewart package bumper during sharp turns. Others have
successfully used 265/75-16's.
Be aware that there will be an slight incorrect reporting of your speed and
mileage due to the larger tires. According to posts at Tundrasolutions.com,
the spedometer and odometer are linked to some sort of transmission based
sensor and cannot be owner calibrated.
The largest tire that has been placed in the spare tire area so far has been a
285/75-16 BF Goodrich Mud Terrain tire.
FYI - The FAQ Author's stock suspension Tundra uses BF Goodrich All Terrain
TA/KO's in 285/75-16. The front mudflaps have been removed to facilitate
lock-to-lock turning without any frame rubbing.
For those of you who would like to calculate the difference in tire sizing and
how it affects your spedometer, there is a free calculator available. The URL
is: http://www.venommotorsports.com/howto/wheeldiameters.htm .
 
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