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Old 01-24-2007, 03:15 PM   #1
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I am installing new tires on my 2000 Diplomat. I want to put new extended length steel valve stems on the inside duals with the new tires. Myers Tire supply has them, but my coach is in storage and I won't be out there for a while, so I was wondering if anyone knows the stem length I'd need and the diameter of the hand holes in the Alcoa aluminum wheels that Monaco used on these coaches in 2000. I need this to order the correct rubber dampers that fit in the holes and keep the stems from vibrating.

TIA!
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Old 01-24-2007, 03:15 PM   #2
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I am installing new tires on my 2000 Diplomat. I want to put new extended length steel valve stems on the inside duals with the new tires. Myers Tire supply has them, but my coach is in storage and I won't be out there for a while, so I was wondering if anyone knows the stem length I'd need and the diameter of the hand holes in the Alcoa aluminum wheels that Monaco used on these coaches in 2000. I need this to order the correct rubber dampers that fit in the holes and keep the stems from vibrating.

TIA!
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Old 01-25-2007, 05:45 AM   #3
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Gaines
Check out Alcoa's web site, find the section on valve extenders. They show the different hole sizes and configurations of different wheels so you get the right donuts. You'll need to measure the distance from the end of the existing valve stem to about an inch outside the hole in the outer rim. They also sell the valve stem caps with it's own valve giving you 2 valves and is threaded.
Not ready for new ones yet. Got them 3yrs ago on the Monaco/Goodyear non-recall recall.
Dave
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Old 01-25-2007, 06:33 AM   #4
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Dave, thanks for the tips. I'll ck it out. Can you tell me more about the "Monaco/Goodyear non-recall recall?" I have G159s on my coach, which I have been told were undersized/under-rated for my coach and I am having to replace them with the next larger size. I already had one blow-out.

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Old 01-26-2007, 05:50 AM   #5
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Gaines, I'll try to keep this short.
The non recall/recall came about because the Monaco engrs and Goodyear didn't put enough tire on the larger 99&00 Windsors. 275/70/22.5 LRH. Ended up with G391E 295/80/22.5 LRH, same as Dynastys, Execs & Sigs. Much smoother ride with losts less pressure. Evidently had some blowouts and probably an accident or 2. Got a notice and new stick on weight tags that I needed 120#F and 115# rear. Tried it but coach was unbearable to drive. Challenged Monaco Mgmt. to come drive this thing. Enough folks griped and got a letter to go to a GY dealer and get 6 new tires @+- $2500 a coach @no charge other than mounting. With my actual loaded weights can now run 90#F & 85#R but run a little more than that. They called it an owner ride preference program, not a recall which would have created liabilities for Monaco. My comment to Monaco Mgmt. which didn't endear me to them, was that the customer "sort of" won one but the lawyers won a bigger one. Next time at a RV park or Show look at the tire sizes on various coaches, not just Monacos and many are severly under tired. Get your coach weighed at each corner or at least by axle and use the tire mfg. inflation charts for that size tire +5#.
Dave
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Old 01-26-2007, 08:09 AM   #6
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Thanks Dave. My coach is also "under tired." It was built with 255/70/R22.5s and has to have high air pressures to be safe. Unfortunately, no "recall" on these. I'm replacing them with 275/70/R22.5s whenever GY catches up on their inventory. Looks like it's on my nickel. I thought I might get lucky and get a free set of tires.
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Old 01-26-2007, 01:29 PM   #7
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That's one of the scary things about buying a coach off a lot. Chances the tires are underinflated at the dealer so they will have a good cushy ride & in the meantime the tire is being damaged as you test drive it. Next time you go on a lot or to a show, ask the salesman what the coach weighs and what tire pressure they are maintaining on that coach. He's gonna look at you like you're crazy. Well, he was just hired from the Chevy place last week. On your coach, if you haven't weighed it do as stated before. Do a worst case, full of fuel, water, everything you usually carry. Why the 295/80/22.5s. Our coach weighs in at +32000# just as heavy as the 2000 Dynastys, same HP, tranny, just not as much tire. Why, $$$ and engrs. with their head up where the sun don't shine and get bonus' for saving a $ rather than sound engineering. You know, they gotta buy jet fuel for those corporate planes. We love our coach since solving those mysterys and have no intention of changing, hopefully this our last coach.
Dave
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Old 01-27-2007, 04:49 AM   #8
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Dave, I've weighed my coach loaded to the gills, front and back. It weighed about 28K lbs. 275/70/22.5s are a good size for my coach.
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