Skip to main content ↑ ↓
Topic: Crack in a dual tire (Read 946 times) previous topic - next topic
0 Members and 1 Guest are viewing this topic.

Crack in a dual tire

Yahoo Message Number: 14102
While returning from an extended weekend in Bishop, CA, I discovered that there was a crack of about 2 inches by 1/8th of an inch going down to the fiber ply which appears to make it unsafe to drive. The crack was in the right rear outside tire on my 2007 Seneca 34SS.

Although I know the tires are getting close to being replace, they're in good shape otherwise. I've kept them covered and periodically have used generous amounts of Aerospace Protectant 303 on them. None of the other tires show any other signs of cracking and this damage most likely was cause by hitting a curb while turning. The tires are Goodyear Regional RHS 245/70R 19.5 with a load range of H.

Questions: If I were to purchase a new outside tire, I would then have two tires with different outside diameters on one side of the axle. Would this create a problem?

What if I were to replace both tires on the right side dual axle. Then I would have tires with one diameter on one side and slightly smaller diameter on the other side. Would this create a problem with the differential?

Thanks for any advice!

Don H.

Re: Crack in a dual tire

Reply #1 –
Yahoo Message Number: 14103
8 year old tires have gone beyond what would be considered there normal life on a motorhome. I would be looking to replace all 6 tires.
Replacing only one tire will put a heavier load on the tire next to it. Replacing only one set of tires on rear axle will make a difference in diameter from one side to other. This will cause wear on rear axle.
The Goodyear tires you have are no longer available. G661 are available in your load range. Make sure you get load range H. Whatever tires you get.
Some other manufactures may have them besides Goodyear. Many are using Michelin XZE tires.
Best
Ron Hall

Re: Crack in a dual tire

Reply #2 –
Yahoo Message Number: 14104
Don,
I have the same Goodyear Regional RHS tires on my 07 Seneca ZX (no tire issues in 35,000 miles) and am planning to replace all 6 tires this year because they are getting too old for my comfort/safety concerns. In my opinion these load range H tires always felt a bit stiff and harsh......I run 85-90 psi. Seems to me that Jayco may have been trying to help handling issues by upping the load range and stiffness of the tires.

While it is certainly nice to have the added tire capacity and safety margin of a load range H tire, I do not think that it is necessarily mandatory when you shop for new tires. I believe that our Goodyear Regional RHS tires have a load capacity in the 4600-4750 pound range (can't verify because my MH is at storage). When I had my Seneca weighed a couple of years ago it had 7,100 pounds on the front axle and 13,380 pounds on the rear axle. That was with 2 adults, full water, 3/4 full diesel, 1/3 full black tank, and a motorcycle in the garage. So by doing the math you can see that the factory tire capacity is really up there.

Many of the load range G tires have a load capacity of 4,400+ pounds each and I am leaning towards the G range tires in hopes of losing a bit of harshness on rough roads. I have not selected a replacement tire at this time, just sharing my thoughts about the matter.

Frank Bock

Re: Crack in a dual tire

Reply #3 –
Yahoo Message Number: 14105
Frank good report with weights of your ZX. Numbers look like G tires will work. I Have Goodyear G647's on front and Firestone F561plus on rear. Both brand tires have similar treads. Ride and noise are good on both. To me all tires are over priced these days. But we do need them.
Best
Ron Hall

Re: Crack in a dual tire

Reply #4 –
Yahoo Message Number: 14106
Was thinking about replacing my original tire from '07 kodiak greyhawk 8.1 gas motor. I have the crappy Michelin currently looking at sumitomo 718 ST 225/70r/19.5 14ply load G
I tow the rock crawler so 25,000 lbs total weight trailer & coach
I do about 1 to 2k miles a year

Should I go to 245's ???
Any knowledge on sumitomo???

Looking to get by not invest. Tires will rot before tread will
Thanks guys
Scott morgan hill, ca



Re: Crack in a dual tire

Reply #5 –
Yahoo Message Number: 14107
Scott, did your Greyhawk come with Michelin Tires? My 2007 came with GY's. Are your Michelin's XRV's?

Don


Re: Crack in a dual tire

Reply #6 –
Yahoo Message Number: 14108
Has anyone bought Michelin tires using the FMCA discount? What kind of price do you get on
the 22.5 tires?
Geene

Re: Crack in a dual tire

Reply #7 –
Yahoo Message Number: 14111
This is from April of 2014 when I bought ones for our SENECA you can get the info off ot FMCA's web-site on the MICHELIN advantage page

XRV 225/70R19.5 F 58916 $1.32 $351.94
XRV 245/70R19.5 F 67140 $5.48 $352.08
XRV 235/80R22.5 G 87511 $11.06 $378.52
XRV 255/80R22.5 G 59634 $16.07 $476.91
XRV 305/70R22.5 L 93499 $40.92 $586.08
XZE 225/70R19.5 F 81473 $1.32 $338.79
XZE 225/70R19.5 G 91043 $4.44 $357.62
XZE 245/70R19.5 H 75997 $13.61 $364.74
XZE 255/70R22.5 H 61737 $18.99 $469.56
XZA2 ENERGY 315/80R22.5 L 76184 $52.83 $586.18
XZA2 ENERGY 295/80R22.5 H 76807 $40.92 $638.53
XZA2 ENERGY 275/70R22.5 J 90059 $32.51 $495.91
XZA1 315/80R22.5 L 47056 $52.83 $566.04
X COACH HL Z 295/80R22.5 H 31078 $45.08 $653.04



Dave

Re: Crack in a dual tire

Reply #9 –
Yahoo Message Number: 14114
We had the XRV's on our first DP. Terrible tires and owners were experiencing all kinds of problems with them (one chap had two blow out while sitting in his driveway unused for a month). Our XRV's simply would not hold air and you could never tell when they would or wouldn't. On one occasion we checked them prior to leaving Charlottesville and drove over 500 miles to get home before a snow storm in April. The next morning two of the rears only had half the required pressure. These were the only Michelins I ever had a problem with and thus the only ones I'd never buy. We did get a notice from Michelin telling us to increase the pressure by 10 psi. Needless to say we had to carry a compressor with us.

D

Re: Crack in a dual tire

Reply #10 –
Yahoo Message Number: 14121
I went with double coin on my 06 seneca 34SS and they have been a smooth running tire. I went with a more agressive tread on the rear so i do get a little road noise but will deal with the road noise for better traction. like you said, they will rot before they wear out. currently have around 20,000 miles on these tires and no issues and the cost was well in the budget.

mark

--

Re: Crack in a dual tire

Reply #11 –
Yahoo Message Number: 14122
I went with a Continental CSR tire two years ago. They are great. I got a higher load range G to H for 100 dollars less than the XRV ro XZE. I got them from Best Tire. They provide tires for R & L trucks located close by in Wlimington Ohio. I run them at 100 psi, which is 10 under the max. I have Koni Shocks and Firestone Ride Rite air bags. It is a good ride, stable, and safe.

Doug
6340 Gulfstream Endura

 

Re: Crack in a dual tire

Reply #12 –
Yahoo Message Number: 14135
Thanks for the great advice regarding my tires. It was very informative. When I took my Senca on it's first cross-country trip, it was an eye-opening because the Seneca was challenging to control. Any over-steering would send it into oscillations which were difficult to control. When I came back home, I had the RV deal install some 900 Rear Super Springs and that made a vast improvement in the handling! That probably explains why Jayco installed the 245/70R 19.5 tires that had a load range of "H" which had a dual capacity rating of 4,675 dual and 4,940 single. They were attempting to overcome the problem with stiffer tires.

A look at the vehicles axles specifications states that the front axle is rated for 8,000 pounds and the rear axle for 15,000. 15,000 divided by 4 equals 3,750 per tire. in fact, the Of course in real life not all weight is distributed evenly. A check of Goodyear's current offering of the G670 RV ULT with a load range of "G" with a dual capacity of 4,410 pounds would surely provide adequate safety margin. In fact the axle specification sticker on the vehicle actually specifies load range "G" by the tires size.

While I know that it's common knowledge to start thinking about replacing the tires every 5 years, there are folks out there on YouTube who advocate that someone can go as long as 10 years between tire changes. With careful maintenance such as keeping the tires covered, using non-petroleum based protectants, driving the motorhome at least once per month, proper pressure, etc., it seems that the tires could be made to last longer.

Regards

D. Honaker.