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Topic: Uniroyal Tires  (Read 3628 times) previous topic - next topic

Re: Uniroyal Tires

Reply #25
Bob I sure would look at the tire sidewall as I stated?  Maybe at the time uniroyal did not have the chart I just searched and found? 

The 6610/120 on the rs20 chart should match the tires?

At 12,350 would match the "g" stock tires at 6150 at 120?

Maybe they used the 13,500 pound front axle as the rating is past the 12,000 unit
"Riding and rejoicing"
Bob
1997 U320 40' Mid entry, build 5132,  wtbi ce27, 4th owner
2007 Solara convertible
2 prodeco tech outlaw ss electric bikes

1095 watts solar
08 Ls 460 and a sc430
2000 Ford F-250 superduty 4x4

Re: Uniroyal Tires

Reply #26
Had a older SOB coach and weighed it. Found front axle was 15260 lbs, but was only rated for 14000 lbs. Called the factory and they told me it was actually a 16000 lb axle, but because tires in those days were only rated at 7000 lbs, they had to rate the axle at 14000. Newer tires can handle the extra weight.
Jim C.
coachfree, previous 1997, 1999, 2000, and 2003 Foretravels.

Re: Uniroyal Tires

Reply #27
I have new RS20's and cannot tell any difference from the Mich's I replaced.  They will need replaced in 5-6 years and will likely have little tread wear.  As someone said in a previous post "round, black and hold air".  I cannot justify the extra $$$ for Michelin...I am sure others can.
Mike and Mari
'98  36 270 WTFE
Build #5272
Club #17504


Re: Uniroyal Tires

Reply #29
Went shopping yesterday found RS 20,  275/80-22.5 in Oregon complete, mounted and balanced no sales tax in Or. for $350/ea
1988  40' Grand Villa Cat 3208t

Re: Uniroyal Tires

Reply #30
   Hi Nancy
that sounds like a good deal. Would you mind sharing the name and location of the tire shop.

                                                                                      Mike.
Shady Lady
98 U270  34'

Re: Uniroyal Tires

Reply #31
Went shopping yesterday found RS 20,  275/80-22.5 in Oregon complete, mounted and balanced no sales tax in Or. for $350/ea

Load Range G or H?
Learn every day, but especially from the experiences of others. It's cheaper!  - John C. Bogle

2000 U320 36' non-slide / WildEBeest Rescue
2003 U320

Re: Uniroyal Tires

Reply #32
Uniroyal RS20's size 275/80-22.5, 7.50 rim  only come  "H" Rated.  I got a price of $350/ea total from Basin Tire in Klamath Falls, Or.
1988  40' Grand Villa Cat 3208t

Re: Uniroyal Tires

Reply #33
Many thanks Nancy.

      Mike.
Shady Lady
98 U270  34'

Re: Uniroyal Tires

Reply #34
Suggestion to anyone replacing the rears, might be a good time to replace shocks at the same time when the rims are off, makes things a lot easier.
1988  40' Grand Villa Cat 3208t

Re: Uniroyal Tires

Reply #35
My personal reason for changing to the latest highest payload Michelin's run at lower pressure and to install Koni FSD were specifically to try to counter our California concrete block freeways sharp cross edges rough ride.

Xza-2's at 107 and 97 psi rear  and the original Koni red tops readjusted three times rode rougher than we like and kicked back fairly hard on square edges and if set softer on the shocks had too much body roll.

All four upper wheel well openings have a lot of damage to the floors underside showing the blue foam from long term too soft/worn shocks and the coach still kicked back on the freeways.

With the 7160 pound rated at 120 psi  "h" Xza-3+'s at 97 psi front  and 87 psi rear respectively for our actual load and with the FSD's installed the latest tech  tires finally allow a reasonable non jarring ride on our overused so cal freeways.

On nicer roads than we have here the differences we needed to try to fix our issues may not be as needed and the differences would not be nearly as noticeable.

On out of state nice interstate highway's our previous  zxa2's ride was similar to our newer tires.

Many here report that their other brand newer  tires rode and drove similar to the older Michelin's on their roads which is what I would expect.

I could have probably saved some of the money we spent and received nearly as good of results if we did not live here.

Judging by the good reports from the other tires from many owners here they seem to be using their coaches on better roads than we have?







"Riding and rejoicing"
Bob
1997 U320 40' Mid entry, build 5132,  wtbi ce27, 4th owner
2007 Solara convertible
2 prodeco tech outlaw ss electric bikes

1095 watts solar
08 Ls 460 and a sc430
2000 Ford F-250 superduty 4x4

Re: Uniroyal Tires

Reply #36
Judging by the good reports from the other tires from many owners here they seem to be using their coaches on better roads than we have?
In my (limited) experience, I'd say pretty much any place (west of the Mississippi River) has (on average) better roads than California.
1993 U280 SE 40' WTBI, Build: 4359
C8.3 300hp, 6-Speed, Exhaust Brake
960 watts on the roof (6 x 160)
Sorento (or BOLT) on a Kar Kaddy SS
"Nature abhors a vacuum"

Re: Uniroyal Tires

Reply #37
The different roads thing finally came to my old brain as the other tires and/or higher pressure that are reported to be similar to the older Michelin models are not as nice of a drive here in beat up roads in California made up out of concrete block with joints.  So it seems the tire selection and needs somewhat depends on what kinds of roads you intend to use your coach on.

The more expensive work better overall if you intend to drive in ca.  If not maybe not noticeable as much to most.

Learned something from this.  Which is good.
"Riding and rejoicing"
Bob
1997 U320 40' Mid entry, build 5132,  wtbi ce27, 4th owner
2007 Solara convertible
2 prodeco tech outlaw ss electric bikes

1095 watts solar
08 Ls 460 and a sc430
2000 Ford F-250 superduty 4x4

Re: Uniroyal Tires

Reply #38
 I am very happy withe 295/75/ mounted on my 7.5 rims. They are snug in the 42in wide fenders at 39.6 tall. But never hit at travel height.

Re: Uniroyal Tires

Reply #39
We also live in California and with 110 psi all around plus a little more rigid sidewalls in our (mostly) Coopers, we just don't have a problem. Around the time of the Olympics in Salt Lake, quite a bit of $$ started to be spent on roads heading toward San Francisco. Our twin cities where we live got new off ramps, nice faux stone work, etc. The highways also received their share of new paving but areas are still to be found that need work. Sacramento is mostly done now. Our secondary roads are in good condition so that should not be a problem for anyone.

The toll roads back east including the Detroit area are much worse that anything I've ever seen in the Golden State. Overloaded trucks wear grooves in the road so you have to turn the wheel to get out of the valleys and then suddenly, you are in the next lane. I still remember driving in the left lane to avoid the canyons in the right lane on our coast to coast trip. The road around the GM plant in Detroit could be used to torture test new vehicles or tires.

With inexpensive fuel because of the low road tax in the U.S., you can't expect Autobahn quality highways. You get what you pay for.

Pierce
Pierce and Gaylie Stewart
'93 U300/36 WTBI
Detroit 6V-92TA Jake
1140 watts on the roof
SBFD (ret)

Re: Uniroyal Tires

Reply #40
Hans & Marjet,
You will need corner weights to properly set the tire pressures.

Bob
The selected media item is not currently available.Bob & Faith Rozek
1997 U320 40'
Xtreme Remodel
2010 Scion XD

Re: Uniroyal Tires

Reply #41
Hans & Marjet,
You will need corner weights to properly set the tire pressures.

Bob
Bob......only front/rear axle scale around here.
Hans & Marjet
1995 U300 "Ben" (#4719)
3176B Cat,4060HD,Jake
SKP#139131
Motorcade#17579
2006 Honda Element (towed)

Re: Uniroyal Tires

Reply #42
Max permissible weight is at max pressure. That's why I've always run 110 (max for the tire) cold all around. Alcoa wheels are stamped for max allowable pressure. 120 psi on ours. Since they are forged, they won't fail at any pressure but the tire bead security is max at that pressure.

Pierce

Pierce and Gaylie Stewart
'93 U300/36 WTBI
Detroit 6V-92TA Jake
1140 watts on the roof
SBFD (ret)

Re: Uniroyal Tires

Reply #43
Had the Uniroyals installed and coach weighed...So what the correct air pressure. 9150lbs Front, 19340lbs rear

Here's the chart
Hans & Marjet
1995 U300 "Ben" (#4719)
3176B Cat,4060HD,Jake
SKP#139131
Motorcade#17579
2006 Honda Element (towed)

Re: Uniroyal Tires

Reply #44
Many years ago tried  max tire pressure, found ride rough and hard on the coach. Adjusted pressure to actual weight plus 5 or 10 lbs. Better ride and handling. Never had a problem running at tire manufacturer's recommendations.
I do use an ir gun to check tire temps when travelling.
Jim C.
coachfree, previous 1997, 1999, 2000, and 2003 Foretravels.

Re: Uniroyal Tires

Reply #45
I do use an ir gun to check tire temps when travelling.

What's a "ir gun" ?  ???
1993 U-240 "La Villa Grande"..CAT 3116 w/ Pacbrake PRXB...Allison 3060 6-speed..
Previous: 1983 Airstream 310 turbo diesel, 1979 Airstream 280 turbo diesel
                                      Build # 4297
                                      PNW natives
                      Home base:  'Cactus Hug' (Ajo, Arizona)
                        DW Judy & Chet the wonder dog
                        Full-Timers 'Sailing the asphalt sea'


Re: Uniroyal Tires

Reply #47
OK, MUCH better/easier to read.

Were it my coach, I would start with 85 front.  If ride too hard, reduce to 80.  Rear 95.

And, as moderator, I will go back and delete the posts based on the very difficult to read table excerpt so we don't totally confuse the issue.

So, everyone, please feel free to comment based on the readable chart.
Thanks.
Brett Wolfe
EX: 1993 U240
Moderator, ForeForum 2001-
Moderator Diesel RV Club 2002-
Moderator, FMCA Forum 2009-2020
Chairman FMCA Technical Advisory Committee 2011-2020

Re: Uniroyal Tires

Reply #48
So....Yesterday after the install I asked the guy's what pressure on the tires...response "120" as the UniRoyal" recommended.

Drove towards home.....got lost 'ANOTHER STORY"..... all felt good....but I still have a shimmy when applying the brake hard....PS
had the rotors checked for "runout" all OK....
Thoughts..???
Hans & Marjet
1995 U300 "Ben" (#4719)
3176B Cat,4060HD,Jake
SKP#139131
Motorcade#17579
2006 Honda Element (towed)

Re: Uniroyal Tires

Reply #49
So....Yesterday after the install I asked the guy's what pressure on the tires...response "120" as the UniRoyal" recommended.

Drove towards home.....got lost 'ANOTHER STORY"..... all felt good....but I still have a shimmy when applying the brake hard....PS
had the rotors checked for "runout" all OK....
Thoughts..???
What does 120 as the UniRoyal recommended mean?
Jim C.
coachfree, previous 1997, 1999, 2000, and 2003 Foretravels.