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Will a Bigger Tire Fit?
Upsizing tires is one of the most popular modifications, but a tire that looks great can rub the fender, liner, or suspension once the wheel turns or the suspension compresses. The key numbers are how much taller and wider the new tire is, and where that extra rubber goes. This tool breaks the change down so you can judge fitment before you buy.
Height and Width Both Matter
Half of any diameter increase moves the tread toward the fender lip, while the section-width increase pushes outward and inward. With unchanged wheel offset, that width splits about evenly to each side, so a wider tire can contact the inner liner or strut as well as the outer fender. Both directions need clearance, especially while steering.
Where Rubbing Really Happens
Static measurements only tell part of the story. The tightest moments are at full steering lock and full suspension compression, such as a loaded turn into a driveway. Offset, wheel spacers, fender rolling, and small lifts all change the outcome, which is why this is a planning estimate rather than a guarantee. Always test-fit and cycle the suspension.
Frequently Asked Questions
How much bigger can I usually go safely?
Many vehicles accept a tire up to roughly an inch larger in diameter without changes, but it varies widely. Larger jumps generally need a lift, trimming, or offset changes.
Does offset affect clearance?
A lot. A lower offset or spacers push the tire outward, helping inner clearance but risking fender contact; higher offset does the reverse. Factor it in alongside size.
Why check at full lock?
Steering sweeps the front tires toward the firewall, liner, and control arms, so a tire that clears straight ahead can still rub when turning, particularly when the suspension is also compressed.