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Jeep Bump Stops for Bigger Tires: Why They Matter and How to Set Them
Guide · Updated October 27, 2026
Bigger tires often fit fine at ride height and then hit the fenders when the suspension fully compresses. Bump stops limit how far the axle can travel up, so the tire stops before it hits anything.
What bump stops do
- They set the limit of up-travel for each corner of the axle.
- Extensions (spacers) lower that limit so bigger tires cannot reach the flares or fenders.
- They protect shocks, which can be damaged if they bottom out.
When you need extensions
- After a lift, to match the new suspension travel.
- When tires rub only on big bumps or while flexing off-road.
- When moving up a tire size without more lift.
How to check clearance
- Remove the coil spring on one corner (or use a jack carefully) and let the axle come up to the bump stop.
- Turn the steering to full lock both ways and look for contact.
- Leave about an inch of space to the flare. If you are unsure, have a shop do this check.
Check what fits
See tire rubbing fixes, leveling kit vs lift, and all fit answers.
Gear that helps
- Digital tire pressure gauge — check pressures cold, before you drive.
- Automatic tire deflators — set a consistent trail pressure fast.
- Portable 12V air compressor — air back up after the trail or adjust at home.
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Disclaimer: General information for enthusiasts, not a substitute for your owner’s manual, a licensed mechanic or your tire shop. Confirm fitment for your exact Jeep before buying.
FAQ
Do bump stops reduce flex?
They limit up-travel slightly, which is the point: the tire stops before it hits.
Do I need bump stops with a leveling kit?
Often yes for 35s, so the tires do not hit the flares.
How much clearance should I leave?
Many owners aim for about an inch at full compression and full lock.