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Author Topic: Small vs. Large Wheels  (Read 3141 times)


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Small vs. Large Wheels
« on: February 18, 2013, 09:46:53 PM »
Did a quick search, but didn't find what I was looking for...

Looking at picking up a late '90's-early '00's Jayco/Starcraft.  I've noticed that some have small diameter (10"-ish) wheels and some have larger diameter (15"-ish) wheels.  I prefer the larger diameter wheels, but the trailer I'm most interested in has the smaller wheels.

What's involved in converting a "small wheel" trailer to a "large wheel" setup?  Is it simply new hubs and wheels/tires, or is it more involved?


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  • Meandering from Tucson to Portland
Re: Small vs. Large Wheels
« Reply #1 on: February 19, 2013, 09:04:14 AM »
Sounds like a lot of work to switch wheels. It would require doing a lift among other things so there is room from the hub up to the floor making it harder to climb in to the unit.
Overall, I don't see where the cost would be worth it.
May your trails be crooked, winding, lonesome, dangerous, leading to the most amazing view. ~Edward Abbey


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Re: Small vs. Large Wheels
« Reply #2 on: May 20, 2013, 11:59:13 PM »
I've got small wheels on my pop-up and have not had a problem in the 10 or so years that I've had it.  I have the wheels checked at the tire shop periodically and off I go. 
1995 Rockwood Tent Trailer Owner

Gary RV_Wizard

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Re: Small vs. Large Wheels
« Reply #3 on: May 21, 2013, 09:22:24 AM »
Assuming there is room in the wheel wells (not a sure thing), it is basically a matter of swapping hubs and associated running gear. You get larger brakes (a good thing) as well as larger wheels and tires. Sometimes it is easier and more cost effective to swap the entire axle(s) than doing it piecemeal.

Like you, I prefer larger wheels. They make fewer Revs/mile, so less heat and fewer bearing problems.
Gary Brinck
Summers: Black Mountain, NC
Home: Ocala National Forest, FL


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Re: Small vs. Large Wheels
« Reply #4 on: May 21, 2013, 11:40:13 AM »
Never owned a trailer but is there a need to swap th hub, axle etc? 

I would think simply swapping wheels and tires is all that's needed, just like when putting different wheels on a car.  With a car obviously we worry about keeping the overall diameter the same for speedometer reasons.  But on a trailer there is no speedo so I would think swapping wheels is all that's needed.  Only issue I would see is if you go to large the tires might be to close to the trailer.

Possibly measure from the center of the wheel to the bottom of the trailer and see if there is a difference in heigth between the trailers. 
09 Buell 1125 cr


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Re: Small vs. Large Wheels
« Reply #5 on: May 27, 2013, 01:05:53 PM »
Never owned a trailer but is there a need to swap the hub, axle etc?

It depends.... Bigger tires require a bigger wheel, they match.

As the tire size  gets bigger, the wheel gets bigger, the number of studs required and their size gets larger. If the trailer has brakes then the axle and brakes/hubs/drums will get bigger too. Tire/Wheel clearance is just one more thing to check out.

I am not familiar with the magic size/number of studs etc formula though...
« Last Edit: May 27, 2013, 01:10:55 PM by Alfa38User »
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