Forum Discussion

snoopeme's avatar
snoopeme
Explorer
Sep 30, 2014

Mercedes Sprinter dually tire pressure

I recently bought a LeisureVan Unity - Class B+ motor home on the Mercedes Benz Sprinter chassis and cannot check or add air to the rear dually wheels without taking off the wheel covers, which takes a lot of work often under dirty conditions. I have found several companies that sell a metal valve extension kit where a tire shop would have to remove the tires from the rim and replace the original equipment rubber valves with the new metal ones.....supposedly getting them out beyond the wheel covers? Does anyone have any experience with this on the Sprinter chassis? How has it worked for you? Thanks for any info you can provide!
  • Funny that this should be posted today as I just had mine installed yesterday on my Sprinter chassis. j-d gave me contact info for the Tire-Man and I talked to Chuck a couple of weeks ago and ordered them and received them right away. Note if you want them quickly make sure you order them before Thursday of the week as Chuck takes all of the orders on Thursday to mail them.

    I modified the front wheel liners prior to taking the MH in. Chuck told me the way to do it and it was very helpful. I have already installed my tire monitors on the valve extension. They work just great.

    I don't know what Don is talking about as I have had this type in the past and they work great. Maybe he is thinking about the flexable ones. These are stems that are long that reach all the way out and have no extensions on the. The ones that fit on the inner dual area about 8" long.

    I also agree with j-d about the rubber valve stems. After you get through chasing them around with the tire gauge they will need air then. I have one heck of a time trying to get the valve to hold steady while I measure and then when I'm trying to get the tire inflator on it holding it steady so air goes in instead of just hissing all over and not getting any air into the tires but losing some more.
  • I have a 2007 LTV with duels and yes the extenders are great ,I can check the duels very ease the stems come out the hub cap hole and are mounted tight. best money you.ll spend and you should check your tires every month. my michilins M S 2 new tires last month ,call for 80# and I carrey 75# all the way around. the very most important part of your rv is the tires, they need a little maintence, after all you expect them to carry you tens of thousands of miles.
  • j-d's avatar
    j-d
    Explorer II
    Then you probably found BORG Dually Valves. My valves are Borg, short for Bill Falkenborg, and I can vouch for Bill's fast helpful service. His site was down awhile but it's running now. Chuck Carvitto's Tire-Man site is easier to find. Bill's kits are less expensive with the same quality, you just get a rear kit instead of a six wheel kit. Tires don't have to be dismounted to install this kit. I'm sure, though, the bead needs to be broken down.

    You said two key words which are "RUBBER VALVES" and you really want to be rid of those.

    Listen, Brother, I was a holdout. Several years of frustrating tire checks. Try to do it with the simulators on. Finally take them off. Still couldn't keep the air gauge or chuck on with that rubber stem. If tire didn't need air before I started it did by the time I got the gauge to stay on without leaking. Meanwhile guys here were saying Do It. Best Thing You Can Do. You'll Love Them. All true.

    Bill and Chuck are great guys with great products and service. I started with Bill and he's the one I can recommend from personal experience. Chuck is another "Nice Guy" (in Bill's words). The only way you can goof this decision is to not get rid of the rubber valves and install something that won't leak and you can access. For most dual wheels, that takes you to Bill and Chuck.
  • Moved from Class B- Camping Van Conversions to class C including B+'s and Super C's
  • donn0128, I disagree with you. Tire pressure is a critical safety item. Pressure should be checked once a month. I have always carried a portable 120 V compressor on trips. As you say, there have been reported failures of the metal valve extensions. I don't have any suggestions for snoopeme other than maybe he can find new wheel covers that have holes to access the existing valves.
  • To be blunt its a waste of money. Many have reported failures due to leaky product. Unless there is a tire problem couple times a season should be good. Just checked my dually tires and they only lost 5PSI in about a year.