Friday, June 2, 2023


What’s the best way to change two flat tires on trailer?

Dear Gary,
I have two flat tires on my travel trailer, one on each side. How do I change tires on it? How do I jack the trailer up to change the tire? Or is there a better way? —Willie B.

Dear Willie,
Well, a better way for me is to call one of my sons-in-law and have them do the work! But here’s the next best idea…

Loosen the lugs on both wheels holding the flat tires while the trailer is on the ground. Always jack the trailer on the main frame rails only – never on the axle. As you raise the trailer, the suspension will relax and sag.

Once the tires are off the ground, support the trailer on weight-appropriate (sized correctly) jack stands and remove/replace the tire assembly.

Always use safety jack stands. Do not allow the jack to maintain the weight while the coach is in the air. Chock the opposite side tires and be sure the tongue jack stays on the ground during the entire process. Change the tire on one side first, then the other side.

It’s best to use a floor jack, but a bottle jack is workable if it can be supported underneath and has enough reach to raise the tires off the ground. In some cases, you might have to use wood cribbing to build up the jack placement. It’s doable, but a hefty floor jack is better.

It’s also wise to find out exactly what caused the flat tires. If there’s no obvious cause (nail, faulty tire valve, etc.), a tire expert can inspect the inside of the tire casing and determine the exact cause of the failure; a little tire CSI!

The main causes of tire failure are under-inflation and overloading. Evidence will show if either contributed to the flats. You’ll certainly want to rectify an issue if you possibly can, so as not to repeat the scenario in the future!

gary-736Read more from Gary Bunzer at the See Gary’s videos about RV repair and maintenance.




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Terri R
3 years ago

Just had a problematic flat (new tire) on our TT – on the 3rd visit to a tire shop they finally cleaned the corrosion from the rim and now it is holding beautifully. {bleeped} that it took the couple visits (& payment for a perfectly good valve replaced) to sort it out….

Tommy Molnar
3 years ago

When I jack the trailer up for whatever reason I use a block of wood to spread the weight on the axle, lifting where the axle and springs are connected. Trying to lift via the frame reminds me of the “old days” of bumper jacks in cars. You had the jack the bumper up way more than you thought you needed just to get the tire to leave the pavement.

5 years ago

Just my opinion but it really depends on the axle being above or below the spring. If it’s above the spring, i place the jack directly under the spring where it intersects the axle. If the axle is below the spring I use the frame. The jack, when in direct contact with the axle, places too much stress on just a few points of the axle. This can flatten or dent the axle tube causing weak points.

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