I'm thinking about changing my 15" wheels and tires to 16" wheels and tires for higher load capacity and better tire selections. I want to start using 10 or 12 ply rated tires and possibly go into the "LT" series for more selection and better road handling.
This mod would be on a 1998 Nash 26x.
Has anyone done something like this on their rig?
Anyone done this on the Nash 26x ? Is it even possible to accomplish?
If so, what are the requirements, problems, pitfalls, etc?
Thanks in advance for any info provided.
Easy. Take the tire diameter and wheel lug or axle ratings and give trailer tire and wheel a call. They will fix you up with either nice aluminum or painted steel wheels of your choice. Then pick a tire with the same or as close as same diameter as what you have now. Probably something,like lt225 85r16 will be a good match.
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I've done it. You will NEED 6 lug drums. If you have 5 lugs, they can probably be replaced with 6 lug ones.. I was surprised at how cheap they were. Mine came with new bearings, so doing this at repack time will save that time and exspense.
Measure carefully You need to maintaina min. of 1" between the tires. That is the easy part (usually). You need a minimum of 3" clearance from the top of the tires to the wheelwell. If needed lift blocks or a spring over axle swap can get you the clearance.
That's about it. I highly recommend this mod. 16" rims opens up a vast amount of tire choices. In the unlikely event you need to replace one on the road, it will be much easier to find than ST tires.
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There are many OTHER things that also limit your load carrying capacity (axles, spindles, shackles, leaf springs or rubber mounts. Increasing the load on the tires doesn't necessarily mean you can carry more. Your ratings are based on the weakest link which is not likely to be your tires.
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If you have the money this is a good mod.
The 245/75R16 load range E tires are ubiquitous and have a capacity of 3042 pounds and are LT rated.
The highest capacity 15 inch tire is the 225/75R15 Load Range E and has a rating of 2830 # or so. = 11,320 total
In actual practice the tires are the weakest link. There are 50 reports of blown tires to each report of a broken axle.
You did not say but a common tire on a 26' Nash is a ST225/75R15 load range D. Weight rating is 2540 # and the trailer has a GVW of 10000 pounds possibly limited by the tires. = 10,160 total
If you weigh your trailer loaded next time and find your actual axle weight to be 8000 pounds you would have a very good reserve capacity in the tires of 41 % In Oregon we can weigh our rigs for free on the public scales after hours very easily. Do it all the time.
If you 15 inch wheels are 5 bolt chances are you won’t find a 16 inch rim…
If they are 6 bolt you can find rims, if you can fit them under the trailer…
Why do these myths never end?... kind of like my current Class C tire size thread "Myth Busted" over on the Class C formum.
There are many choices of 5 bolt 16" rims. Search for after market car rims instead of a trailer rims. Expensive boat trailer companies even offer 'Dubs'...
The main reason for the 6 bolts is the extra capacity of the LRE 16" tires.
When I did it, I LOOKED for 5 bolt 16" rims that would work. The only way was to have them custom made. They were well over 200.00 each! And then if I decided to spend that on rims, and I damaged one on the road somehow,,,no replacement would be available.
It's been a few years, so maybe things have changed.
Do you have any links?
I did that on my jayco, the idea was to rotate 2 year old tires off the TV onto the trailer, and scrap the trailer tires. Then I would not have trailer tires older then 4 years, and fresh rubber on the TV all the time. I run 20k a year on my truck, maybe 2k on the trailer.