Community Forums

chefred112 · 01-20-2021, 01:00 PM

Hello All, I've tried to do a search for this but the results are all over the board except for the answer i want. I want to check air pressure on my tires and add if necessary. Do I go off of what the tire specifies? and how long does a tire typically last, it seems that rvers use dates rather then wear as the barometer for getting new tires.

thanks...Fred

Mr Ted · 01-20-2021, 01:04 PM

You need to weigh your rig "each axle" for a proper answer. Michelin website clearly states 10 years Max if no cracks or other signs of deterioration.

bentjm · 01-20-2021, 01:54 PM

You can find the weight chart for your particular tires online. Weigh your coach, add 5 to 10 percent, look up the weights in the weight table and set your tire pressures accordingly.

For my 2005 Mountain Aire DP 4032 running Bridgestone tires, I run105 in the fronts and 95 in the fronts

Johninar · 01-20-2021, 03:09 PM

Hi Fred,

You are correct, tire information is all over the map. In a nutshell this link gives you everything you need for Michelin. If you have another brand go to that manufacturer and get their chart. More importantly, this doc gives you the background info.

https://michelinb2b.com/wps/b2bcontent/PDF/RV_Tires_Brochure.pdf

Corner weigh your coach loaded with fuel, water (that you typically carry) & gear. If you haul a load of people, account for that. Use the heaviest corner weight for inflation lookup on the chart for each axle. If one side is much heavier than the other try to rearrange items.

As for tires, they usually age out before they wear out. This varies somewhat depending upon how well the tires are treated and how long they are exposed to the elements (uv rays) etc.

A coach that is stored indoors will have less exposure and should last longer. 5-7 years is a good rule of thumb.

Good luck,

John

tom chelbana · 01-20-2021, 04:26 PM

Many of us Newmar owners would suggest replacing your tires after 6 years based on the date code of the tire. After 275K miles of travel from Alaska and every other state and having 2 blow outs it just doesn't make sense to go 10 years. Michelin says after 5 years to dismount the tires every year to inspect the inside of the tire which is a big job. With a front tire blowout on our Essex returning to lower 48 at over 20K dollars damage and not having the coach for 4 months with 6 year old tires makes us well aware of the importance of our coach tires.
Newmar Man

hewebb · 01-21-2021, 04:41 AM

Quote:

Hello All, I've tried to do a search for this but the results are all over the board except for the answer i want. I want to check air pressure on my tires and add if necessary. Do I go off of what the tire specifies? and how long does a tire typically last, it seems that rvers use dates rather then wear as the barometer for getting new tires.

thanks...Fred

We have the Toyo 295/75 R22.5 tires and a similar coach. I have weighed ours when loaded for travel. Currently run 94 on the front and 80 on rear. I called Toyo and they were very helpful and they sent me a chart. The proper pressure improved the ride and handling. Also had the wheels aligned.

chefred112 · 01-21-2021, 11:37 AM

thanks for all your suggestions...I was able to search on Toyo's site for the rv tire and inflation chart and got this...

chefred112 · 01-21-2021, 11:39 AM

Quote:

Originally Posted by hewebb

We have the Toyo 295/75 R22.5 tires and a similar coach. I have weighed ours when loaded for travel. Currently run 94 on the front and 80 on rear. I called Toyo and they were very helpful and they sent me a chart. The proper pressure improved the ride and handling. Also had the wheels aligned.

where would you go to get your wheels aligned?

hewebb · 01-22-2021, 05:39 AM

I had ours done at Cowser tire in Fort Worth. They are a large truck tire dealer.

https://cowsertire.com/

sgwyble · 01-23-2021, 08:05 AM

Not sure if you are near Spartan, they would be a great choice. We had ours done at Freightliner in Gaffney. Important to check ride height and tire pressure prior to alignment

plane · 01-23-2021, 01:32 PM

Quote:

Originally Posted by chefred112

Hello All, I've tried to do a search for this but the results are all over the board except for the answer i want. I want to check air pressure on my tires and add if necessary. Do I go off of what the tire specifies? and how long does a tire typically last, it seems that rvers use dates rather then wear as the barometer for getting new tires.

thanks...Fred

I can tell you from experience don't ignore the date code. I am a firm believer in the 6 year rule.

chefred112 · 05-23-2021, 12:47 PM

i bought my coach back in december with 15k miles on her. Have since added 7k more miles and experienced a blowout on an inner rear tire (my fault) and a piece of tread come off the front passenger side. These tires have been replaced an it rides so much better which makes me believe the front tire replaced must have hardened even though there are no signs cracks/dryness on it. With a planned national trip beginning next weekend I bought tpms to monitor tire pressure. Currently all tires show 100+ lbs in it an I plan to lower to 94 fronts/80 rears based on Howard's example (didn't have time to weigh) since he's running identical brand and tire size on a coach that is very similar to mine...

TJ · 05-23-2021, 02:28 PM

Quote:

Originally Posted by chefred112

i bought my coach back in december with 15k miles on her. Have since added 7k more miles and experienced a blowout on an inner rear tire (my fault) and a piece of tread come off the front passenger side. These tires have been replaced an it rides so much better which makes me believe the front tire replaced must have hardened even though there are no signs cracks/dryness on it. With a planned national trip beginning next weekend I bought tpms to monitor tire pressure. Currently all tires show 100+ lbs in it an I plan to lower to 94 fronts/80 rears based on Howard's example (didn't have time to weigh) since he's running identical brand and tire size on a coach that is very similar to mine...

He may be “running identical brand and tire size,” but his loading may be different from yours. There is no substitute for properly weighing YOUR coach.

TJ

chefred112 · 05-23-2021, 05:38 PM

Quote:

Originally Posted by TJ

He may be “running identical brand and tire size,” but his loading may be different from yours. There is no substitute for properly weighing YOUR coach.

TJ

what are you running for tire pressure...