Michelin LTX M/S tires

[jtbarbee]

I have Michelin LTX M/S tires, 225 75 R16, on my 2014 30' International. I inflate at 80psi cold, which is the max pressure listed on the sidewall. No problems so far with about 20 K miles on the tires. I have the same tires on my tow vehicle (F250) but they are 275 65 R20's. The recommended inflation pressure on the truck tires is 65 PSI although I inflate to 70. The max pressure is 80 psi. I have been advised to use 80 psi on the trailer tires, which I guess is due to the potential need to provide weight support if the trailer is fully loaded. I'm just trying to confirm that I'm doing the right thing. Any comments?

[dznf0g]

Yes, you are doing it right, IMO. That said my 30' Classic is somewhat heavier than your Intl., but I played with pressures for a couple years and took the advice of the tire engineers who post here. I settled in at 80 psi and have no I'll effects on the AS.

[wulfraat]

I run mine at 70lbs on the trailer... (about 7,000lbs loaded)... even then the ride seems a little harsh. Always picking cushions off the ground after we've moved locations...

[Andrew T]

If you like send me an email and I can send you a column on how to weigh your combination and determine your correct tire pressure. Andy@canamrv.ca



Sent from my iPhone using Airstream Forums

[slowmover]

Originally Posted by jtbarbee

I have Michelin LTX M/S tires, 225 75 R16, on my 2014 30' International. I inflate at 80psi cold, which is the max pressure listed on the sidewall. No problems so far with about 20 K miles on the tires. I have the same tires on my tow vehicle (F250) but they are 275 65 R20's. The recommended inflation pressure on the truck tires is 65 PSI although I inflate to 70. The max pressure is 80 psi. I have been advised to use 80 psi on the trailer tires, which I guess is due to the potential need to provide weight support if the trailer is fully loaded. I'm just trying to confirm that I'm doing the right thing. Any comments?

Take Andy up on his offer.

[dznf0g]

Unless you listen to actual tire engineers.

[white laker]

nope not gonna do it................
enjoy your tires and have a safe trip. All the best
Pete

[tjdonahoe]

75 on the ram, 16" michelins on 31' classic with 72 lbs pressure,

[Photobum]

I run all my Michellins at sixty-five pounds, tow vehicle with trailer.

[MelGoddard]

When I replace my Hancook 'O.E.M tires, I want tires that I can run all year 'round, like I did with my 4-Runner using General 'ATS.
So are the Michelins winter rated?
Like with a snowflake on the sidewall?
(The reason is on another previous post)

[CruizinDux]

This is a very long thread that started as a discussion of 15 & GYM' > 16 with Michelin, but has morphed (as long thread do) to include ST vs LT and the use of inflation charts for the weight of your rig and even per wheel to name a few off topics. The inflation discussion meanders but basically starts @ post #100

I've made it to post 329 and have a way to go.

http://www.airforums.com/forums/f465...s-69297-8.html

Bob

[GammaDog]

I have the same tires on our AS. I wish I could get them for my Tundra, but when I re-tired they didn't make them in my size.

We were advised by the dealer (Colonial) to inflate to 80 psi. We did. Like others, we found things getting pretty shaken up inside. I went to 70. Some improvement and no noticeable change in wear. I'm now running at 65 psi. I don't think I'll go lower.

After 30,000 miles on the tires, the only way I know they have worn is that I had to adjust my X chocks once. The tread is showing even wear across the tires. That suggests to me that the inflation I am using supports the load evenly.

Like others have said, tapping expert advice for your specific trailer - which is likely much heavier than ours - is a great idea.

[MelGoddard]

Originally Posted by dznf0g

Unless you listen to actual tire engineers.

"You can ALWAYS tell an Engineer, but you CAN'T tell them much"!


Trailer Trash......."

[r carl]

Originally Posted by dznf0g

Unless you listen to actual tire engineers.

You mean the guy's that gave us the great ST tires? No thanks...

[aswbe]

Max pressure is for trailer tires - ST's - not truck tires LT's. Truck tires should be inflated for the weight per axle. Michelin web site has a psi charts for their tires used as trailer tires and you will find your recommended psi some where near 60 psi. As to the damage done for running at max, IMO it is long term stress on the trailer and uneven tire wear, center treads wearing faster. I noticed visible improvements on interior rivet popping and less loose items tossed around the trailer when I went from 72 to 60psi on my 25'

[lsbrodsky]

Originally Posted by aswbe

Max pressure is for trailer tires - ST's - not truck tires LT's. Truck tires should be inflated for the weight per axle. Michelin web site has a psi charts for their tires used as trailer tires and you will find your recommended psi some where near 60 psi. As to the damage done for running at max, IMO it is long term stress on the trailer and uneven tire wear, center treads wearing faster. I noticed visible improvements on interior rivet popping and less loose items tossed around the trailer when I went from 72 to 60psi on my 25'

I know they used to, but I cannot find that info anymore.
Larry

[lsbrodsky]

http://www.michelintruck.com/assets/...k_Sept2011.pdf

Found it here.

Larry

[ChuckFeldt]

I have used the white liquid shoe polish stripe across the tread process to determine perfect tire pressure on many vehicle tire applications.
Vehicle manufactures' recommended pressures are nominally lower than tire sidewall maximum pressures. Sidewall maximum pressures are usually at tire maximum load weights.
All that said. Installing a tire with a higher load rating than stock will allow you to run a tire pressure somewhere between vehicle manufacturers' recommended pressure and new sidewall max. To determine that exact pressure, paint a couple of stripes of white shoe polish across the tread. Note the current tire pressure, go for a short drive with left and right turns, stop and inspect the stripe. Stripes showing tire edge wear need more air, stripes showing center wear Can lose some air. This process works for all trailers cars and trucks.
Good luck.

[rmatkovich]

Originally Posted by jtbarbee

I have Michelin LTX M/S tires, 225 75 R16, on my 2014 30' International. I inflate at 80psi cold, which is the max pressure listed on the sidewall. No problems so far with about 20 K miles on the tires. I have the same tires on my tow vehicle (F250) but they are 275 65 R20's. The recommended inflation pressure on the truck tires is 65 PSI although I inflate to 70. The max pressure is 80 psi. I have been advised to use 80 psi on the trailer tires, which I guess is due to the potential need to provide weight support if the trailer is fully loaded. I'm just trying to confirm that I'm doing the right thing. Any comments?

All tires on tandem axles should be at max. It is not the weight problem it is when U turn and the scuffing of the tire that will ripe the cords out of place. Not when U turn how the tire bends, that is what what rips a tire apart. As for UR TV. the tires do not scuff because of the distance between the front and the rear. I pull a 34' AS with 1997 F-250 same tires as UR trailer and get around 70,000 miles before replacing as long as U rotate every 7,000-10,000 miles. Been towing for 40 + years.
2000 34' limited #12,500 1997 F-250 349,000 miles and still going.

[m.hony]

I run 65 psi in my LT tires on my Classic 30.
I wonder if I should pump them om up to 80 PSI...
The tire placard on the side of the trailer says 65 psi and I have never had any problems with that pressure- no noticeable wear- even tread wear-
The tires still look new after 1 year 3 months and 10,000 miles.