What is your average freeway/highway speed?

Flow with the traffic. In Atlanta all the though lanes shift to the left.
Have to keep up. Atlanta Drivers won't let you in and indeed will speed up to keep you from merging as in many other places.
There is no average sped like on I69 north of Indy narrow two lane Interstate with split speed limits and trucks playing leap frog and keep out.

dogunter wrote:
We're new to RV'ing and purchased a 30' 2007 model R-Vision trailer. It has been wonderful so far but we are also concerned about speed issues.

At about 60 mph the trailer will sway considerably, despite our anti-sway hitch setup. I looked at the tires and they are only rated to 62 mph (ST205/75D-14, tandem axles).

Since our highways here in New Mexico are 75 mph maximum speed limit, would it make sense to upgrade to a tire rated for a faster speed?

Is this even possible? I haven't found anything that also doesn't increase tire radius (which may not be possible for our trailer).

Thanks.

You may need to work on your hitch setup some more. I had a weight distributing hitch setup with my 24' toy hauler, that really needed a 3/4 ton truck to pull. With my half ton after original setup I had some sway. After a few more adjustments on the hitch the sway went away completely, even up to 70mph.

As far as my DP, i run +/- 5mph of speed limit trying to stay with the flow of traffic.

JaxDad wrote:

tropical36 wrote:
Yeah and especially since the tires are only rated for 75.

Unless you’re talking about some unusual offshore stuff that comment isn’t quite accurate.

Almost all 22.5 and 24.5 Tire’s are rated for 75 mp/h OPERATION (at proper inflation of course) that’s NOT to say that’s the maximum speed they’re rated for.

Even if that was the maximum rated speed though, there’s still a healthy safety margin built in. If they’re ‘rated’ for 75 they don’t hand grenade at 77.

Well, I thought it said 75max, right on the sidewall and know that I've seen it somewhere, but you're right and it's most certainly not engineered to explode at 77. Fact is, they have been known to explode at any speed and less speed is always better, for if and when it happens.
Still baffles me with the speed thing and the feeling that it's just as safe for driving a motel suite, as it is a car. I mean, if a motor-coach is safe at 75, then a Ferrari should be safe at a 100, but for some odd reason, it's the same as the rest.
Speaking of being the same, it's all about the money, like everything else, otherwise trucks would be limited to 60, like the old days and RV's would have to follow suit.
For us, RVing is supposed to fun and non stressful, with getting there when you get there, otherwise, we catch a plane. Having said that, we can still do 50mph, travel cheaper and outrun a car for days on end, with no motels, restaurants or bathroom stops, along with overnight boon-docking.
As an added note, we've been passed by the same Coach, 3 times in the same day and many times twice. Now how is it, that they are going to arrive at their destination, any sooner?

Big Katuna wrote:
DP, 50 mph avg for planning, 300 miles per day..

The Allison shifts into 6th around 62 so 62-63.

Minimizes passing..

Towing I do 65...not towing I do 65-70

tropical36 wrote:
Yeah and especially since the tires are only rated for 75.

Unless you’re talking about some unusual offshore stuff that comment isn’t quite accurate.

Almost all 22.5 and 24.5 Tire’s are rated for 75 mp/h OPERATION (at proper inflation of course) that’s NOT to say that’s the maximum speed they’re rated for.

Even if that was the maximum rated speed though, there’s still a healthy safety margin built in. If they’re ‘rated’ for 75 they don’t hand grenade at 77.

Diesel Usually 62-65 MPH

Low 60's for me with a DP

GeorgeandTheBear wrote:
Wow! A couple of days ago I was in my F-250 and was lock-step behind a motor home towing a mini-van on a tow dolly. My cruise was set at 77 MPH! I eventually went around it on a long hill and checked to see that it was a Monaco Windsor DP with single axle in the 35-40' range. I'm definitely no expert, since I don't even own a coach yet, but that seemed a bit much.

Yeah and especially since the tires are only rated for 75. I'd sure hate to be anywhere near him, when a front steer tire blows. Wonder how fast he drives in a sports car, given the handling characteristics of each?
Not to mention, he's probably only getting 20mpg at that speed.....Yep, pun of some sort intended and a lol for sure.

Coach converted from gas to Duramax 6.6L turbo diesel. Generally run in the 62-65 range as it is a relaxing speed for me. I like to avoid stress! I have come from Oregon to Mo to MN to VA and have averaged 13+ mpg. Will go back west via Canada.

8.3 -350 Cummins, Alison 6 speed, I'll run 60-65 MPH at about 1700 RPM, on the level. getting me 9-10 miles per gallon.

65-70. = 6 miles per