| Author |
Message |
Brian Elfert
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, March 23, 2006 - 8:26 am: | |
Are coach and truck tires different? Do I need to specify I need coach tires when tire shopping?
Should I get steer tires up front and drive tires for the rear? Could steer tires be moved to the rear?
I suspect I'll need to replace the steer tires for age before they wear out so they may never go to the rear.
Brian Elfert |
John MC9
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, March 23, 2006 - 9:22 am: | |
Tires are made with chemicals that are designed to be released
when the rubber flexes, and that's what keeps the tire flexible.
If you don't use the bus, and it sits more than it rolls, the tires
won't last.... They'll "age".
Since truck (or bus) tires are re-capped over and over, the
actual age of it doesn't mean much...
In my opinion, unless you plan to do a whole helluva lot of
off-road driving through sand pits and the like, stick with
highway thread (steer type). Remember that your tires can
be re-grooved. Re-grooving the rears (if bald) can save you
a mucho moolah. And decent threads on "take-offs" are a
nice way to go, also. Take-offs can be had for 100 or less... |
Brian Elfert
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, March 23, 2006 - 1:15 pm: | |
My coach will sit about 50 weeks out of the year unless I drive it for the heck of it. I'm alsmost certain the tires will crack and dry rot before they wear out.
I didn't think about regrooving. I might be able to regroove some of the current tires if they don't have sidewall cracking.
I also never thought about take-offs. I've bought take-offs for my car when I destroyed just one tire.
Brian Elfert |
John MC9
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, March 23, 2006 - 1:29 pm: | |
It'd be a shame to buy new tires to use 'em two weeks a year...
Oh hey... buy 'em and I'll swap you my old ones!
That way.... they won't go to waste!
(yeah, that's the ticket!) |
Brian Elfert
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, March 23, 2006 - 2:50 pm: | |
Take-offs might end up being the ticket for me, at least the drive tires.
Even though I use the bus only two to three weeks a year, I put on a minimum of 6,000 to 7,000 miles in that time.
Brian Elfert |
Buswarrior (Buswarrior)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, March 23, 2006 - 5:39 pm: | |
Hello Brian.
Find a local trucker who has to buy his/her own tires, and prefers to buy virgin rubber.
You buy what the trucker uses, tires and rims.
When the trucker needs new tires, you sell them to the trucker for a discount that reflects the small mileage you have taken off them, and for it to be attractive enough to participate.
Think of the afternoon in the driveway swapping tires from one to the other as good exercise?
And then, with the proceeds topped up from the bank account, go buy some more fresh tires.
Once the cycle is started, you get to always wear fresh tires on your bus for an easier to budget minimal cost, the trucker gets almost new tires for a discount, and the tires get used up instead of rotting off the rims.
Everyone wins!
Then you have no concern whatsoever of where your value system or bank account fit into the whole question of "how old is too old" associated with scrapping old tires and buying a whole set from scratch.
Owning the trucking company makes it even easier!
happy coaching!
buswarrior |
Gus Causbie (Gusc)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, March 23, 2006 - 6:20 pm: | |
Are coach and truck tires different? Do I need to specify I need coach tires when tire shopping?
Nobody even tried to answer his question??? I sure would like to know the answer to this too. |
JR
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, March 23, 2006 - 8:51 pm: | |
They are not different. Just use the correct load range (formerly "ply rating") for the weight of your coach, and be certain that the speed you normally operate is within the tire's specs.
Weigh your axles and see what your coach really weighs. Then you can decide what sort of tires will be adequate.
JR |
John MC9
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, March 23, 2006 - 8:55 pm: | |
Gusc-
No.
Goes by size, thread, and load rating...
(I'm running 315/80-22.5 highway thread on all 8) |
John MC9
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, March 23, 2006 - 8:57 pm: | |
oops. JR already got yer answer to ya'!! |
Gus Causbie (Gusc)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, March 23, 2006 - 11:44 pm: | |
Thanks. |
David Hartley (Drdave)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Friday, March 24, 2006 - 3:18 am: | |
I installed Goodyear G670RV tires in the 315/80R22.5, They are designed for resisting degradation from the sun and elements and occasional use.
Rated at 75 Mph, Up to 9000 lbs load range @130 psi, Lots of floatation (wide pattern) Maybe a little expensive but warranteed for 4 years.
All position too.. Many sizes available. |
FAST FRED
Rating: N/A
Votes: 0 (Vote!) | | Posted on Friday, March 24, 2006 - 6:08 am: | |
What ever you do do not think "Bigger is Better".
The tires are part of the suspension package , so getting 16 ply when you could use 14 ect is a bummer.
Weigh the coach , read what the coach was fitted with when new , and dont go for weight carring capacity if you dont NEED it.
FAST FRED |
Brian Elfert
Rating: N/A
Votes: 0 (Vote!) | | Posted on Friday, March 24, 2006 - 8:22 am: | |
How much do those Goodyear RV tires cost? I've seen the ads, but figured they cost a bunch. Might be worth if they last a few more years.
Any issues with running 315/80R22.5s on a wheel designed for 11 or 12R22.5s?
Fred, The Dina I want to get currently has 12R24.5 tires, but another owner says they normally have 22.5, not 24.5. I can't look at the data plate right now. I'll gladly switch to 22.5 if they work fine.
Brian Elfert |
John MC9
Rating: N/A
Votes: 0 (Vote!) | | Posted on Friday, March 24, 2006 - 9:17 am: | |
"Any issues with running 315/80R22.5s on a wheel designed
for 11 or 12R 22.5s? "
The new buses are coming through with those, and the local
bus company runs nothing but those. My bus had them on all
but the tags, and the seller gave me two 80% to use as part
of the deal... All tires except the tags, are no less than 60%,
and more than good 'nuff for me.
Just how bad are the tires on your bus? Unless they're totally
bald, or severely cracked, why change 'em? Buy some
RV insurance from FMCA, Good Sam's, or any of the
major "tow insurance" companies... It includes tire changes.. |
dougtheboneifiedbusnut
Rating: N/A
Votes: 0 (Vote!) | | Posted on Friday, March 24, 2006 - 10:51 am: | |
Hey Brian,
I'll take the 24.5's if your gettin rid of them. Thats what i'm going to run on my coach. |
Brian Elfert
Rating: N/A
Votes: 0 (Vote!) | | Posted on Friday, March 24, 2006 - 11:03 am: | |
I read some older tire threads that the rim width is different for 11/22R22.5s than for 315/80R22.5 tires. New coaches that use 315/80R22.5s are certainly going to have the right rims.
I would only need to replace two or three tires right now. The steer axle has one new tire and one 50% tire right now. I plan to replace both steer tires and move them to the back. One drive tire is cracked pretty bad and at least one tag is barely legal.
I will have roadside assistance, but I don't want a bad tire blowing out and causing damage.
As far as tire size and MPG, one charter operator has several Dinas and he gets 9.5 MPG with 22.5 tires. My MPG worries were more with the 6/8V92s getting 6 to 7 MPG. 9.5 MPG is fantastic.
At this point I don't plan to replace any usable tires.
Brian Elfert |
John MC9
Rating: N/A
Votes: 0 (Vote!) | | Posted on Friday, March 24, 2006 - 6:35 pm: | |
Keep in mind, that the two tires on the duals must be the same
height, width, etc. You shouldn't use a 40% used and a 60%
used tire together on the dual.... Or a 315 and a 12r.. They
should be matched...
The rim width size for the 315 is 1/2" wider... but three tire
outfits (that also sold rims), said not to worry about it...
Check around... use your own judgement. It bothered me
at first, but the local bus co is mix'n and matchin' rims, and
he said he wouldn't do it, if it meant a possible breakdown.
If I had 12rs on the rig when I bought it, I'd leave it 12r...
I had 315s.. so they'll stay. I put the two the seller gave me
on, and I'm getting two 315s for the tags... As long as you
have all the same sizes on yours, and they're usable... I'd
leave 'em as-is.
Drive the thing!!! Go, man... GO! |
Jarlaxle
Rating: N/A
Votes: 0 (Vote!) | | Posted on Friday, March 24, 2006 - 6:36 pm: | |
A 315/80R22.5 is the same size (+/- an inch) as a 12R22.5 tire. Watch out for 305/85R22.5's--these are usually low-speed (<55MPH) heavy-sidewall transit tires, usually Firestone City Transits or Goodyear Metro Milers.
I will run take-off Goodyear G159 Unisteel rib tires in front, and traction Bandags in back, all in 11R22.5 size. |
truthhunter@shaw.ca
Rating: N/A
Votes: 0 (Vote!) | | Posted on Saturday, March 25, 2006 - 5:12 pm: | |
After reading over many manufacture spec sheets for 22.5 tires while trying to learn anything about my tired and worn 12.75Rx22.5 on my MCI 8 drives, the one concern that came up in some of the specs. were that -
most 12Rx22.5 tires seem to need a 8.25" wide rims (OEM on most MC 8 I understand)
almost all 315/80Rx22.5 brands called for 9" rims. A few of the manufactures noted that you if mounted on 8.25" rims the maximum weight was reduced by up to 700lbs. Not all stated you could mount on 8.25" rims, but a few did. Could this void the warranty ???, then perhaps get it clearly state on the invoice that the dealer mount the 315/80Rx 22.5 on your OEM 8.25" rims<might><at which point you might be obligated to buy new 9" rims???.
So if my observational questions should attracted a tire experts attention- - - maybe I can be lead to some education about my 2 odd ball 12.75Rx22.5 drive tires (actually only the right side drive only, the left side drives are B315/80R and I am guessing the B is for Bus maybe from a lease program?). I had been considering trying to regrove all six rear tires at $40 each; as I don't expect to be able to put on many miles over the next few years; however with all this mix-matching on the drive axle I am a little concerned about this route. Also how well does regroving work if there is a bit of cupping? {yes I plan on doing the suspension bushings now) Should the regrove drive& tag tires be reblanaced if they never leave there rims? I am new to the regroving thing and am looking for a short term cheap solution, the "need" & budget for new tires are a few years down the road. |
John MC9
Rating: N/A
Votes: 0 (Vote!) | | Posted on Saturday, March 25, 2006 - 8:50 pm: | |
Awwwww....
315/80R22.5 = 8.25, 9.00, 9.75 rims
Since I'm not putting them on a garbage truck, my 8.25 will
do just swell! |
Stan
Rating: N/A
Votes: 0 (Vote!) | | Posted on Saturday, March 25, 2006 - 8:59 pm: | |
I would expect that your 12.75 tires have a greater diameter than your 12.00 tires. If that is the case, it is hard on the differential to drive it that way. |
Jarlaxle
Rating: N/A
Votes: 0 (Vote!) | | Posted on Sunday, March 26, 2006 - 1:09 am: | |
Maybe swap the oddball 12.75's to the tag axle?
Then again, aren't 12.75-22.5's usually low-speed transit tires? |
Jon W.
Rating: N/A
Votes: 0 (Vote!) | | Posted on Sunday, March 26, 2006 - 4:35 pm: | |
If it makes any difference my coach came from the factory with 9.00 aluminum wheels on the outside and steel 8.25 wheels on the inside of the drive axle with 315 width tires.
On my previous coach I had 12.00 tires and if my memory is correct they were rated (single) for about 7400 lbs, and my current 315 tires are rated (single) at 9000 pounds.
The 315 tires are definitely wider than the 12.00. |