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Old 03-30-2019, 01:43 PM   #1
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Brand: Thor Motor Coach
Model: 24.1
State: Michigan
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THOR #12332
Uneven wear steering tires,

Hi, We have a 2015 Thor Axis 24.1 with 16,000 miles and the two front tires are just about worn out on the inside edges. I have to replace them and will get it aligned up to help prevent this from happening in the future. Has anyone else noticed this happening? And what are the specs I should share with my alignment shop? Also what brand of extensions do you have to adjust the tire pressure on the inside rears? Thanks from Traverse City Michigan.
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Old 03-30-2019, 02:59 PM   #2
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Model: Miramar 34.4
State: Iowa
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Yes. I had a similar problem on my 2016 Miramar due to toe in being way off. I discovered it at about 4,000 miles. Had the front alignment done and the wear has evened out. I now have about 14,000 miles. That's why I suggest to any one that will listen...Step one after buying your motor home is get it aligned.
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Old 03-30-2019, 03:01 PM   #3
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THOR #1944
The tire wear description fits not being aligned after the box got put on the bare chassis. Additionally spring sag, adding weight and wear can also cause alignment shift toward toe out and negative camber.

Few are lucky enough to get a good alignment shop that really knows how to properly align a van or delivery chassis that's always at maximum compression.

I've had good luck with E series chassis alignments when specs are biased toe in and 0 camber. But the real discovery was maxing out positive caster and most shops don't offer correcting this unless it's way out. I doubt you'll even find a sleeve that will provide too much caster.

Personally, when you get new tires have them put metal dually valves on and use a truck type air chuck for filling and checking. Just makes things simpler for the long haul.
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Old 03-30-2019, 03:01 PM   #4
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Also, any good alignment shop that handles truck/rv alignments will know the "specs".
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Old 03-30-2019, 03:42 PM   #5
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Model: Axis 24.2
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THOR #1944
The "aw this drives nice" takes more than just robotically getting into alignment specification ranges defined for any given chassis One problem with RVs on the E chassis is that it's a tweener ... not quite a truck and design roots of urban delivery.

There's 2 choices ... 1) learn and understand specifications enough to know exactly what you want, for how and where you drive so you can negotiate achieving those specifications or 2) find an alignment specialist that first knows and is willing to take the "time" to do it right based on your use.

Either way ... Secondary highway (2 way crowned pavement) optimizations differ slightly from freeway and then there's urban delivery. Get it tuned for how you use it most! RUV as a local soccer or tailgating rig, is right there with urban use design and typical in-out discount alignment shops will be just fine
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Old 03-30-2019, 03:53 PM   #6
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THOR #12332
We purchased the 24.1 in August of 2018 with 14k miles, the tires were showing significant uneven wear, it pulled to the right which was made it tiring to drive. Took it in and had a few items repaired and a front end alignment, made a huge difference. With the new tires going on this spring would like to confirm the preferred caster camber setting to prevent further premature wearing. The idea to match your settings to your driving needs is worth a good look. Thanks everyone for chiming in. Happy motoring.
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Old 04-01-2019, 12:29 AM   #7
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Miramar Owner and Others: Yes, that is good advice. Get your vehicle aligned. A heavy duty truck shop is the place to do it. Like Rush Trucking, which is nation wide.. But any big diesel truck place, mostly along the interstates, can do it.

I drove to Alaska, from Florida. My wheels were out of alignment. I won't bore you with all the details, but I ruined my front 22.5 inch tires and burned out my front wheel bearings.

My mistake was assuming that my new Miramar was properly aligned. It wasn't.

These are hard lessons and nobody (not the dealer) tells you this stuff up front.

Jim
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Old 04-01-2019, 11:29 AM   #8
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Model: THOR Chateua 35SF
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Quote:
Originally Posted by Elkers View Post
Hi, We have a 2015 Thor Axis 24.1 with 16,000 miles and the two front tires are just about worn out on the inside edges. I have to replace them and will get it aligned up to help prevent this from happening in the future. Has anyone else noticed this happening? And what are the specs I should share with my alignment shop? Also what brand of extensions do you have to adjust the tire pressure on the inside rears? Thanks from Traverse City Michigan.

Great lesson on routine tire inspection.
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Old 04-01-2019, 01:10 PM   #9
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THOR #5313
My tires are wearing even at 22,000 miles. In the old days the twin I beam front suspension was hard on tires.

My buddy is needing new fronts at 17,000 on his Four winds 22. I told him take for alignment to truck shop at regular use weight.

When initial crown wore off fronts, Vegas seemed to be less likely to wander.
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Old 04-13-2019, 01:02 AM   #10
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Model: Hurricane31s
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Here is my story. Had an alignment done , alignment was good, but was told I needed to replace my steer tires. My steer tires were wearing on the outside edges. I went to a local truck tire shop with my concerns. Hereís what I was told: not unusual for steer tires to wear on the edges especially outside edges because when turning thatís where they wear. They swapped the steer tires with the two left rear tires and all is good. 100 bucks plus tax. Check with a truck tire store, you might save some money,
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Old 04-16-2019, 01:29 PM   #11
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Originally Posted by Elkers View Post
Hi, We have a 2015 Thor Axis 24.1 with 16,000 miles and the two front tires are just about worn out on the inside edges. I have to replace them and will get it aligned up to help prevent this from happening in the future. Has anyone else noticed this happening? And what are the specs I should share with my alignment shop? Also what brand of extensions do you have to adjust the tire pressure on the inside rears? Thanks from Traverse City Michigan.


At 20K miles, it was pointed out that the steer tires on our 2013 A.C.E. 29.2 were worn more than would be expected and that I should have the alignment checked. After alignment was corrected I chose to replace the steer tires. As far as the alignment specs are concerned, the alignment shop should have them if they service truck chassis.
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Old 04-16-2019, 01:58 PM   #12
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State: California
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THOR #3483
Quote:
Originally Posted by Elkers View Post
We purchased the 24.1 in August of 2018 with 14k miles, the tires were showing significant uneven wear, it pulled to the right which was made it tiring to drive. Took it in and had a few items repaired and a front end alignment, made a huge difference. With the new tires going on this spring would like to confirm the preferred caster camber setting to prevent further premature wearing. The idea to match your settings to your driving needs is worth a good look. Thanks everyone for chiming in. Happy motoring.
Our new 2016 24.1 Axis acted the exact same way as you described yours- pulled to the right. I was told by the selling dealership that it was due to tire pressures not being even....wrong. Then I was told that there was something wrong with the brakes.....wrong. It NEEDED an alignment. NO weird tire wear anymore.
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