I have a question. How fast do you drive with your 5th'er or TT.

What kind of gas milage do you get.?

Double pulling a 25' fiver plus a 18' Reinell going between 65-70 on fairly hilly interstate. I-25 in WY, got around 9.5 mpg.

Jim

62-63 getting 8-9 mpg.

I pull a 5er @ +/- 22000#.

I pull @ 60 - 65 mph, this yields ~ 9 - 13 mpg.

The equipment will pull at much higher speeds and I do accelerate above 65 for short periods, to clear a situation.

IMHO, sustained speeds over 65, with Electric Drum Trailer Brakes are inherently unsafe, (stopping distance).

Towing at speeds over 60 mph also drinks fuel.

For what it's worth, enjoy.:)

Idahofox

I tow at 60 - 63 in CA, where the limit is 55, and 65 everywhere else. Mileage is usually in the 11s w/Juice on level 1, but I haven't had any flat tows since installing it. Most are in the hills. In my pre-Juice days, towing on the flats at a steady 65, I'd see 12 mpg, give or take a few tenths. I would expect a slight improvement over that.

TC

Some thing to remember, ALL ST tires (Trailer Service) are rated @ 65 MPH.

Bob

Some thing to remember, ALL ST tires (Trailer Service) are rated @ 65 MPH.

Bob

How about LT tires, how are they rated?

Idahofox

Idahofox

I hope you are not asking the question about LT tires because you are running them on your trailer or going to do so. LT tires or any tire except trailer tires on a trailer leads to tire failure. The sidewall and rubber composition in trailers tires is different than other tires. The trailer causes a lot of sidewall flex and the trailer tire is designed for that. The composition of the rubber allows the tire to sit for extended periods without deteriorating. I know of people who have used other than trailer tires which caused pemature failure with near disastrous results.

tom Cobb

Tom Cobb,

Oh realy........

These people do not agree with you....

Goodyear. (http://www.goodyear.com/rv/products/product_g614rst.html)

Other members. (http://dieselplace.com/forum/showthread.php?t=34610)

Me.

And you did not answer my question.

Idahofox

I tow my 7500# 5th wheel at around 60 unless I get on the freeway here then the speed limit is 70mph so I try to maintain that unless the wind isn't helping me then I can't maintain 70.

Lots of trailers (mostly 5ers) come from the factory nowadays with LT load range E tires. Most ST tires top out at 225 75 15, D range (some, I believe Titan and Carlisle, offer a range E in their 15" tires) but that is still not enough for the bigger trailers.

TC

Idahofox,

Michelin XPS Rib's are a "LT" tire, but according to their own website, they are great for commercial trailers. I had them on my tounge pull toyhauler and would trust them against any "trailer" tire. Go to the Woodalls or RVNet forums and look how many people have blow outs with "trailer" tires. Nearly every "trailer" tire made is made in China:badidea: and, IMHO, they are not that well made.

Idahofox,

Michelin XPS Rib's are a "LT" tire, but according to their own website, they are great for commercial trailers. I had them on my tounge pull toyhauler and would trust them against any "trailer" tire. Go to the Woodalls or RVNet forums and look how many people have blow outs with "trailer" tires. Nearly every "trailer" tire made is made in China:badidea: and, IMHO, they are not that well made.

You have me confused with someone else. I Run "LT" tires on my 5er. LT relates to tire sizeing, Not "Trailer Tire", "Non Trailer Tire".

I run the Goodyear G-164s, in an LT size, specificaly designed for "Trailers" and they Damn Sure ARE NOT "Made in China".

Goodyear's are "Made in USA", Where are Your Michelin's made?

What is a "trailer" tire? A tire on a trailer?

Idahofox

55 to 60 MPH & 10-12 MPG. Being a retired truck driver (32 years driving a tanker for Shell Oil) I am only too well aware of what happens when a problem developes with a heavy load behind you. It starts driving you. Also, I ran LT tires on my last 5th wheel (33' & 11000#) for about 5 years & a lot of miles & it was just fine.

Perm01, it's time to trade that gasser in on a Duramax, then you'll be able to maintain whatever speed you want. With the GMS for everyone deal going right now, now is THE time to trade!;) Really, you ought to look into what the difference would be trading in your truck. You'll get better mileage too.

Perm01, it's time to trade that gasser in on a Duramax, then you'll be able to maintain whatever speed you want. With the GMS for everyone deal going right now, now is THE time to trade!;) Really, you ought to look into what the difference would be trading in your truck. You'll get better mileage too.

Thats always a thought. Does anyone know off hand how much of a discount it adds up to?

I could always take the $4000+ extra it would cost for the dmax and put on a sts turbo... :D

Idahofox

That is a recent change in position by Goodyear because they are the ones that had pushed the issue not to do it along with RV manufacturers and the Trailer Life Technical folks. If notice it is only one specific tire not all of them. Goodyear Marathon is their trailer tire.

Trailer tires are sized with ST (Service Trailer) in place of LT. I tow travel trailers and horse trailers from the manufacturer and they have ST tires almost exclusively. On the side of the tire it states that it is specifically to be used on trailers only. Like I stated earlier they are designed to meet specific requirements. If the manufacturers are now installing LT, which is Light Truck tires, then I expect they have determined that in some applications they are OK. I have towed two horse trailers recently that had trailer tires (ST) Load range G and H on them.


Tom

I just did a 3600 mile trip towing a 26' Fleetwood Prowler TT. The trailer filled weighed in about 5700#s. It is a big wind brake sticking 3' above the cab. I ran into alot of head winds, 10 out of 12 tanks of gas were in wind. Had a lot of elevation changes, up to almost 9,000' with 7% grades. I averaged around 11.49 mpg hand calc. The DIC was about 20% off. When I was driving around without the trailer the DIC was within 2%. My speed was almost always around 65MPH and my HYPER was set at lvl 3 the whole time. A few times I did put the EDGE in lvl 1 to do some passing. Over all I am very impressed with the truck for the first time pulling. Made alot people look at me when I passed them at 70mph's:eek: .

I get about 11.5 mpg towing. Worst of 10 and best of 13.

On the tire issue, I have owned 2 TT's and 3 5th wheels. All an ST tire is good for is blowouts and damage to the unit. Carlisle are the worst, but none of them are any good. The best upgrade anyone can do with an RV is convert from 15" to 16" wheels running a min. of Load Range E tires. Another benefit is that the unit tracks better with less sway and rocking. The rocking is also greatly reduced when the the unit is parked and setup.:rant:

Just Finished a 4800 Mile trip.
Trailer 10000 plus truck loaded 500+
55 14.5
55-60 13.5
60-65 12
65-70 10
70-75 9
80+ 7

But it really handles, Did the 80+ in WY on 14 going to Cody. Awsome truck

I pulled a 30' Arctic Fox with a Chevy 1 ton, crew cab, 4x4, 8' bed and averaged 10 mpg across the country at 70 to 75 mph! the truck gets about 18 unladened a 70 mph! Hope this helps!

I got 11.5 on a round trip to Las Vegas from Denver with my 11' 4000# Lance camper going to the NASCAR race. This was running at 70 on the highway and a bad side/head wind on the return trip. A trip to the lake on Fathers Day towing my 8000# boat behind the camper netted 9.9 at 60 to 65.
On the tire issue I have been running 235 75 R16 LT Remingtons load range D on the boat for 3 years now over hot Colorado, Utah and Nebraska roads with no problems. I scattered two of the original tires that were on the trailer when I bought it. I do think they were a bit underrated for the weight tho.

25k-26k GCW 5ver and truck. At 60mph 9-10mpg, any higher than 65mph 8-9mpg if I'm lucky. JJ

Rig in my sig weighs in a little over 18K lbs, average 10mpg all told running the speed limit.

I've been running BF Goodrich commercial LT on my 5000# TT for many years , never even had a flat . After 4 hours @ 65 with 85F air temp they are luke warm . My buddy with small MH runs E's and they are hot to the touch . Sometimes overtiring works against you . LT tires can be used on trailer or truck , ST tires can only be used on trailer , does that tell us anything.

04.5 LLY
Trailer loaded at about 10000
Truck had about 750
Went from Ohio thru. Indinia, Ill, Iowa, SD, WY, CO, KA,Missori, IL, IN And Back
Mileage
0-55 14.5
55-60 13
60-65 12
65-70 10
70-75 9
75-80 8.5
80+ 7.9

And I really did 85 on Rt. 14 in WY
Awsome truck, did not really feel the trailer unless the wind was strond.

I was cruising @ 70 mph and RPMs were right below 2K and I averaged 10. I dont feel that is too bad. When I went 76-78 I averaged 7-8 then. I love having my supertank since I dont have to stop every 250 miles or so. Now it is closer to 700. Pulled like a charm. Never did flinch.

Ben

I pull a 8000# 5er.

Had a 1999 6.0 Gasser and loved the truck but got 8 mpg with trailer attached no matter what the terrain was like.

The new truck only has about 3000 miles on it and I made 11.3 mpg. My usual haul is from about 3800 feet to 7800 feet in 50 miles. D/A put a serious smile on my face!

My recent bad experience with Carlisle trailer service tires led me to replace them all. We have a toy hauler TT with 13000 GVW. It is 6500 dry and is about 8500-9000lbs on a typical trip. At less than 2 years old we had our first blowout. The other 3 tires finished the 500 mile trip ok. We got a Yokohama 788 LT235/85/16-E to replace the blowout because choices were limited on the road in a strange city. The Yokohama ran MUCH cooler than the Carlisle's and has less sidewall sag. Upon careful exam of the remaining Calisle's, all three had uneven tread and one was starting to have a crack around the circumference! I replaced those with more Yokohama 788's and am really happy now. FWIW, I maintain the recommended 80psi cold before every trip.

SilveradoHD, Thanks for some feedback, How much $$$.
I know small town and they probly got you on the $$$ part.