Forum Discussion

Yeates689's avatar
Yeates689
Explorer
Jun 05, 2020

Dually valve stem extensions

I have a 2019 Gulfstream RV BT cruiser 5230 motorhome class B. I love it very much and anticipate going to Florida for the Winters starting in a year or two.
My question is I have dual tires on the rear axle and need to be able to check tire pressure so need to put valve extensions on the tires. I know nothing about this and have not been able to find them in any auto parts stores even NAPA auto parts did not have access to them. The outer rear tire has the nozzle facing in and the inner tire has the nozzle facing out so I suppose I will need one straight extension and one curved and maybe am able to put braided extensions on that I could bend and fastened to the hubcap? My questions are as follows;

1. Will 7 inch Extenders suffice for the inner tires on the rear?
2. Do I need to have this stems removed from the existing tires or can I screw the extenders directly onto the existing stems?

I can't think of any other questions but keep in mind I don't know a thing about this so any knowledge you could give me including where to get them would be extremely helpful!

PS-It would be extremely helpful if I only knew how to post pictures!

Robert

17 Replies

  • and welcome your on the right track,,ask before you do some thing . we,ve all made some mistakes, this form will help you.
  • not just any tire shop .one that handles big tires. I have a small C had terry,s tire town put four new michelins on, AND we talked about how I wanted STEEL stems put on so you can check all tires from the out side. kid put flex lines on,we had a major understanding I did not want flex stems,shorter story, manager knocked two hundred dollars off my bill. went to all pro rv they had the job done right.flex lines will leak just a matter of when.
  • All you really need is dual air gauge.
    https://www.amazon.com/CZC-AUTO-Straight-10-150PSI-100-1000KPa/dp/B07CXLXL5X/ref=sr_1_2?dchild=1&keywords=dually+air+gauge&qid=1591401830&s=automotive&sr=1-2
  • Thank you for the reply and I just googled DULLY VALVES. Do I understand correctly that I could just bring my RV to a tire shop and have them install the stems?
    By the way-N1JAO
  • http://photoposting.is-great.net/?i=2

    Much discussed topic on the Class C or Tow Vehicle forums too. I have the same issue with my Class C. There are good quality extensions and bad ones it seems. They can leak and cause problems of their own.
  • wa8yxm's avatar
    wa8yxm
    Explorer III
    Google DULLY VALVES.. They need to be installed in place of the existing tire valves. but.. NICE.. (when I Had new tires on a couple years back I had 'em installed)

About Technical Issues

Having RV issues? Connect with others who have been in your shoes.24,270 PostsLatest Activity: Jun 16, 2025