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07-28-2021, 09:28 AM
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#1
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Senior Member
Jayco Owners Club
Join Date: Dec 2020
Location: Phoenix, AZ
Posts: 104
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Tire wear question
33’ Class A on F53 chassis with 25k miles. Overall the RV drives pretty well, with no noticeable pulling or wandering. The outside tread of all tires appear to be wearing.
I plan to bring it in for an alignment but I’m a new owner and I’ll be going to a shop that I’m not familiar with so I’d like to try and educate myself before hand.
Is this kind of wear normal?
Sorry about the pictures, I can't figure out how to reorder or annotate them. They are in order: Passenger side steer, Rear Driver, Driver side steer and Rear Passenger
__________________
Thanks, Bryan (2020 Jayco Precept 31UL with 2018 Buick Envision toad)
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07-28-2021, 09:37 AM
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#2
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Member
Join Date: Dec 2020
Posts: 62
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Underinflation is a good possiblity.
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07-29-2021, 07:15 AM
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#3
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Senior Member
Join Date: Dec 2017
Posts: 1,698
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Quote:
Originally Posted by rjwilliams
Underinflation is a good possiblity.
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I had the same thought before seeing your reply. I always go by the sticker by the door and not a lower number based on weighing the coach unless the center is wearing faster.
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TeamFoxy ~ Traveling North America
2016 Newmar Canyon Star 3710
2017 Chevy Equinox in tow.
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07-29-2021, 02:04 PM
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#4
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Senior Member
Join Date: Dec 2013
Location: Lake Havasu City, AZ & Plover, WI
Posts: 6,403
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Quote:
Originally Posted by Teamfoxy
I had the same thought before seeing your reply. I always go by the sticker by the door and not a lower number based on weighing the coach unless the center is wearing faster.
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Why wouldn't you go by the load inflation charts that are designed by tire experts to provide the best traction, control and wear?
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2006 Monaco Executive 44 Denali
2013 43 QGP Allegro Bus ( SOLD )
2013 Avalanche
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07-29-2021, 02:16 PM
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#5
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Senior Member
Fleetwood Owners Club Workhorse Chassis Owner
Join Date: Jun 2016
Location: On the continental divide
Posts: 2,605
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Bryan,
The fronts are "toed in" so alignment will fix this.
Have your tire shop turn the fronts inside out on the rim.
Throw in balance beads when they are open. You will never regret it.
The duals are low on air. Kick the pressure up 10 lbs from where you are now.
Monitor the results and report back on how they are wearing.
Clean a spot on the duals and put duck tape across the tread, and take a short drive. Check the tape for uneven wear.
Mike in Colorado
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2004 Fleetwood Pace Arrow 37c, 8.1 gasser, (Jezebel) Ultra RV ECM / TCM, plugs wires, and rear track bar, PPE deep Tx pan w/ temp gage, Bilstein's, Sailun's & Sumo's all round, pushed by a 2002 Grand Caravan, on a Master Tow Dolly OR a WR-250 on a rail.
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07-29-2021, 03:37 PM
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#6
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Moderator Emeritus
Join Date: Jan 2000
Location: West Palm Beach, FL. USA
Posts: 27,519
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First of all, you don't have a significant problem with any tire. Fronts could benefit from an alignment and rears are probably slightly underinflated, but you could probably drive those tires until they age out (7-10 years) before the wear became a problem. Flyer15 gave advice for optimal tire life, but I'd just have fronts balanced and aligned, and check the pressure in the rears vs the tire placard recommendation. And sleep well at night!
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Gary Brinck
Former owner of 2004 American Tradition and several other RVs
Home is West Palm Beach, FL
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07-29-2021, 04:33 PM
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#7
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Senior Member
Join Date: Sep 2018
Posts: 350
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Hmmm, those are Michelin steer tires. The outside of the tread is slick like that. Measure tread depth across the tire before you decide you have a problem.
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Richard Entrekin
99 Newell,Subie Outback toad
Inverness, Fl
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07-29-2021, 04:54 PM
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#8
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Senior Member
Join Date: Oct 2019
Location: North Dakota
Posts: 196
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Quote:
Originally Posted by Gary RVRoamer
First of all, you don't have a significant problem with any tire. Fronts could benefit from an alignment and rears are probably slightly underinflated, but you could probably drive those tires until they age out (7-10 years) before the wear became a problem. Flyer15 gave advice for optimal tire life, but I'd just have fronts balanced and aligned, and check the pressure in the rears vs the tire placard recommendation. And sleep well at night!
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Correct. Looks like a toe in problem.
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07-29-2021, 10:58 PM
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#9
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Senior Member
Jayco Owners Club
Join Date: Dec 2020
Location: Phoenix, AZ
Posts: 104
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You guys are like tire whisperers . Thanks. I’ll add a balance to the alignment. Also found that the local tire shop can do 4 point weighing so I’ll get that taken care of also (and see how far off I was approximating).
__________________
Thanks, Bryan (2020 Jayco Precept 31UL with 2018 Buick Envision toad)
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07-30-2021, 01:30 PM
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#10
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Senior Member
Join Date: Dec 2017
Posts: 1,698
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Quote:
Originally Posted by Crasher
Why wouldn't you go by the load inflation charts that are designed by tire experts to provide the best traction, control and wear?
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If you are using the chassis maker's specified tires, you will find that the tire maker's chart will exactly coincide with the chassi maker's sticker inflation at the GAWR for each axle. Unless you are running well under your GAWRs, which is doubtful, you will not be much different. It is better to be overinflated than under inflated and I seriously doubt that people change tire inflation for changes in amounts carried in fuel, water, and sewer tanks.
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TeamFoxy ~ Traveling North America
2016 Newmar Canyon Star 3710
2017 Chevy Equinox in tow.
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07-30-2021, 06:55 PM
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#11
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Senior Member
Join Date: Nov 2011
Posts: 562
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Please report back on the four point weighing. Remember that you may not have it fully loaded, so add ten psi to the recommended pressure on the load pressure chart for your tires. I do and never need to adjust them unless it gets to be within five psi of the recommended pressure. That way cold mornings, hot days, and altitude changes do not require pressure adjustments.
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Marc
2013 Thor Palazzo 33.2
2013 Honda CRV
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07-30-2021, 11:56 PM
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#12
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Senior Member
Jayco Owners Club
Join Date: Dec 2020
Location: Phoenix, AZ
Posts: 104
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Quote:
Originally Posted by Teamfoxy
If you are using the chassis maker's specified tires, you will find that the tire maker's chart will exactly coincide with the chassi maker's sticker inflation at the GAWR for each axle….
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The sticker called for 90# on all tires and which does match Michelins load recommendations assuming full weight on all axles. I was originally running at 110 on steers and 100 on the rears based on the dealer’s recommendation (bought used). The ride was rough as heck. So I dropped it down to 95 on steers and 90 on the rears but I think that’s when the wear started to show. We’ll see what the tables call for once i get it weighed and how they wear after it’s aligned.
__________________
Thanks, Bryan (2020 Jayco Precept 31UL with 2018 Buick Envision toad)
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07-31-2021, 06:43 AM
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#13
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Senior Member
Join Date: Dec 2013
Location: Lake Havasu City, AZ & Plover, WI
Posts: 6,403
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Quote:
Originally Posted by Teamfoxy
If you are using the chassis maker's specified tires, you will find that the tire maker's chart will exactly coincide with the chassi maker's sticker inflation at the GAWR for each axle. Unless you are running well under your GAWRs, which is doubtful, you will not be much different. It is better to be overinflated than under inflated and I seriously doubt that people change tire inflation for changes in amounts carried in fuel, water, and sewer tanks.
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That may be true with some RV's, but not mine. My sticker called for 110 psi on all three axles. After weighing all six positions, I found that according to Michelins chart, I needed 115 on the steer, 85 on the drive, and less than 75 on the tags. So, by the sticker, I was underinflated on the steer and way overinflated on the rest. After adjusting to the correct chart pressures and 50,000 miles later, I had pretty even tire wear and a better ride. The manufacturers can be close some of the time, but the load/inflation chart is right ALL the time.
__________________
2006 Monaco Executive 44 Denali
2013 43 QGP Allegro Bus ( SOLD )
2013 Avalanche
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08-20-2021, 07:43 AM
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#14
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Senior Member
Jayco Owners Club
Join Date: Dec 2020
Location: Phoenix, AZ
Posts: 104
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Wanted to wrap this discussion up and pass on a little something I learned.
First of all. You all were correct. Problem was toe. On weight and tire pressure, the total vehicle weight was 18560 (all equipment, full fuel & water but without my wife & I, food or clothes). LF = 3840, RF = 3380, LR = 5500, RR = 5840. They set the tires at 95# on front and 85# on back. Which gives us plenty of room for the extra weight.
Helpful tip: Apparently Michelin sizes are proprietary. So when you ask for sizes off your Michelin tires (eg 235/80R22.5/14 on mine) the brand that can match that size is Michelin. If you want to look for other near equivalent options you'll need to specifiy a different size. For mine it would be 245/75R22.5/14
Thanks again for all the help.
__________________
Thanks, Bryan (2020 Jayco Precept 31UL with 2018 Buick Envision toad)
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