Tire Pressure

[gkbutler]

55psi in the front; 80 psi in the rear at all times. 80psi in the Monty.

Gary and Karen
SFC USAR Ret.
MOC (4049)
2006 2950RK
2005 Chev 2500HD Duramax/Allison SB
16K Pull rite Super Glide
Prodigy brake controller

"Twenty years from now, you will be more disappointed by the things you did not do than by the things you did, so throw off the bow lines, sail away from safe harbor and catch the trade winds in your sails." Mark Twain

[Wrenchtraveller]

[quote]Originally posted by sreigle

In the Montana, 80 psi all the time. In the truck, when towing, 65 in the front, 80 in the rear. Not towing, 65 all around is what I do with ours.

See another Montana or Mountaineer on the road? Flash lights twice, it might be one of us!
Steve Reigle (pronounced Regal)
Fulltiming since 3/21/03
'07 3400RL
'05 Ford F250 SD Lariat CC SB 6.0L PSD/TS FX4 4x4

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[/quo

This is what I do also.

Don & Donna
Vancouver Island
2005 Ford F350 V10 Lariat CC 4x4 LB SRW 11200 GVWR
2006 Montana 2955RL
click on the little pic to see a big pic

[skypilot]

Considering the question of where one finds individual 'scales': Some state trans departments have 'portable weigh stations' (weight police???) that use portable scales. There is also a group that attends several rallys every year that does the weight -- I believe they are affilitated with Good Sam. In my case, as the weigh station was closed, I simply drove onto the scale until only one tire was on the scale, then drove on until only one tire was left on the scale. Not the best way but figure it gives a good close approximation (what an oxymoron, close-approximation!!).

[sreigle]

Thanks, Skypilot. And you gave me an idea how to do this. Most of the commercial scales are not situated where you could drive on just one wheel at a time. Or it would cost for each weighing. But here in the midwest many grain elevators leave their scales on 24x7. I used to use one of those for weighing our rig occasionally. It is situated where I could drive just one wheel onto the scale. It's 110 miles from where we are but one of these days we'll go by there again when they are closed. Thanks.

See another Montana or Mountaineer on the road? Flash lights twice, it might be one of us!
Steve Reigle (pronounced Regal)
Fulltiming since 3/21/03
'07 3400RL
'05 Ford F250 SD Lariat CC SB 6.0L PSD/TS FX4 4x4

Our RV Travels (now Firefox-compatible)

[MAMalody]

Let's leave the air pressure for a moment. I may be needing a couple of 5er tires next year. Is there a real difference between the LT and ST. I understand that the ST is because of the side flex that the duals create in cornering. What should I be looking for and ... I almost hate to ask this...which tires seem to perform better?

Mike

F350 7.3L LB SRW
2003 3575RL

[LonnieB]

Hey Mike, Glenn said it in a really descriptive way, it's not word for word, but it was something like this, the tires on your TV are LT, the tires on your trailer are ST, which one carries human life on an everyday basis and which one doesn't? My sentiments are the same as his. He used to have a tire store, I have one now. I always recomend LT for trailers, but leave the ultimate decision to the customer. I personnaly use LT.


Lonnie
2006 Montana 3000RK, Reciever Hitch for Boat and Toy Trailer
2003 F250 CC PSD, LB, 6 Speed Manual Trans., 4X4, Air Suspension, Husky 15K Hitch

[Glenn and Lorraine]

I was in the tire business for many many years. As a passenger and truck tire serviceman both in house and on the road. I was a Tire Service manager and General manager in 2 different tire shops. I was a founder and co-owner of Adams Tire and Battery service. Now Lonnie's experience as a shop owner and my experience may not make us experts but it does make us very very knowledgeable when speaking about tires.

Having said that.. Both Lonnie and I are using the LT's on our Monty's. And when I do buy a NEW Monty in all likely hood it will have ST's on it but I promise you they will be replaced with LT's as part of the purchase or I'll find a dealer that will work with me. It's not that I feel the ST is a bad tire it's just that I feel LTs are a better tire.

As far as "I understand that the ST is because of the side flex that the duals create in cornering." is just a punch of hype. My LT's show no sign of adverse effects of corning and they have been on the road full timing for nearly 3 years.

[Wrenchtraveller]

Yes, I love it, I have always felt LT tires were superior and to hear two tire guys give their take on it is GREAT.

When a pick up is turned sharp and you punch the accelerator on these new monster torque engines, you can't tell me you aren't applying a lot of side torque to LT tires. They take that kind of abuse and more. They are overloaded and run daily and yet you hear of more blow outs on ST tires.

My Mission STs have performed well for me and I will chance one or two good long trips with them and then they are coming off and good LT tires going on.

I have had the Mission STs unmounted and they are a flimsey rag that I could squeeze the tire beads together with one hand so they touched. This was with either my right or left hand at about 70% of my strength. I went to a tire store and tried that with any LT tire in the place and no way...........even the Governor of California would have trouble squeezing a ten ply LT tire together.

Don & Donna
Vancouver Island
2005 Ford F350 V10 Lariat CC 4x4 LB SRW 11200 GVWR
2006 Montana 2955RL
click on the little pic to see a big pic

[Cat320]

I read on another forum that the Mission tires on the new Montanas have been "upgraded"...whatever that means.

Bert and Betty
Fort Smith, AR
2007 Silverado Classic 3500, DRW, D/A, CC
2007 Montana 3400RL

[Hemlockusa]

I guess I need to read my TV book a little further on The Dodge 3500 dually it calls for 60# for front and 65# in rears for heavy load and that is where I have kept them. Prehaps I need to check the manuel a little further most of you are running 70 and 80's now you have me wondering and that's bad for a old man


2005 Dodge 3500 4x2 Dually Cummins Diesel, Line X /2005 Montana/""MOC TRAVEL ASSISTANCE VOLUNTEER"" ""TOPEKA, KANSAS AREA"" 3650RK

[Wrenchtraveller]

Don't forget you have twice the rubber on the road as us SRW guys so for you 65 may be fine.

Glenn will be along to give us the skinny. ( No pun intended ) Take care .

Don & Donna
Vancouver Island
2005 Ford F350 V10 Lariat CC 4x4 LB SRW 11200 GVWR
2006 Montana 2955RL
click on the little pic to see a big pic

[Glenn and Lorraine]

Take note that you're single front tires carry about the same psi as us with our SRW and your DUAL rear tires are sharing the load and therefore each carry less of an individual load and therefore require less air pressure.


Glenn
Montana Owners Home Page
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Glenn and Lorraine
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[virgil47]

I mentioned this on another thread but bears repeating. It would be a good idea to make sure that the rims are stamped 80psi on the back IF that is what is called for on your vin sticker. My Montana was used when I bought it and I found that it had 60psi wheels but that the vin sticker called for 80psi. "Apparently" someone had changed the wheels. I cracked an aluminum wheel before recognzing the problem. It only takes a flashlight and a minute to check.

Virgil & Jo Allmond

1998 Volvo 610, 425hp, 14 Speed tranny

STICK HOUSE IS IN Suches, GA

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[Cat320]

My dually says 65 psi max all the way around.

Bert and Betty
Fort Smith, AR
2007 Silverado Classic 3500, DRW, D/A, CC
2007 Montana 3400RL

[Glenn and Lorraine]

quote:Originally posted by virgil47

I mentioned this on another thread but bears repeating. It would be a good idea to make sure that the rims are stamped 80psi on the back IF that is what is called for on your vin sticker. My Montana was used when I bought it and I found that it had 60psi wheels but that the vin sticker called for 80psi. "Apparently" someone had changed the wheels. I cracked an aluminum wheel before recognzing the problem. It only takes a flashlight and a minute to check.

Excellent point Virgil excellent. Unknowing owners sometimes do foolish things. They get away with it but those buying their used rig sometimes don't.

[sreigle]

Mike, many fifthwheels come from the factory with LT tires. Others with ST. Montana has used both LT and ST over the years, right from the factory. There was a discussion on this forum a couple of years ago when Montana started using LT. Our new one is ST so I guess they changed back.

Last March when we replaced our tires I went with LT, primarily because I wanted a particular brand I've had outstanding performance from on my truck and I didn't see an ST in that brand. I only put about 8,000 on those tires before we traded the rig but those tires performed perfectly and looked great as for wear. But that's only 8k miles. It did include some extreme heat while towing, including 112 in Death Valley for 70 or 80 miles.

See another Montana or Mountaineer on the road? Flash lights twice, it might be one of us!
Steve Reigle (pronounced Regal)
Fulltiming since 3/21/03
'07 3400RL
'05 Ford F250 SD Lariat CC SB 6.0L PSD/TS FX4 4x4

Our RV Travels (now Firefox-compatible)

[MAMalody]

Thanks for the LT/ST info. How about better brands or ones to stay away from?

Mike

F350 7.3L LB SRW
2003 3575RL

[sreigle]

I went with BF Goodrich on the last Montana but didn't put enough miles on before trading to know how they'll do. The truck at 65k miles still has the original BF Goodrich tires and looks like they will make 75k to 80k.

The current Montana has Mission tires. While there have been some concerns in this forum I think I've heard of just one bad tire.

I've had Goodyear Marathon trailer tires on several rigs including two Montanas. I will never ever never ever never ever buy another Goodyear Marathon tire. I can say I never wore the tread out on any of those Marathons. Not one ever lasted that long before blowing out, separating belts, or something. Like this one a couple of years ago....


See another Montana or Mountaineer on the road? Flash lights twice, it might be one of us!
Steve Reigle (pronounced Regal)
Fulltiming since 3/21/03
'07 3400RL
'05 Ford F250 SD Lariat CC SB 6.0L PSD/TS FX4 4x4

Our RV Travels (now Firefox-compatible)