Re: Tires Reply #200 – May 04, 2017, 02:14:35 pm X2, you may have leaking valve stems/seals, or beads sealing issues as John said. May be once a year I may add a small amount of air due to loss. I do however change air pressure if I go to a cold or hot climates for extended periods. Quote Selected
Re: Tires Reply #201 – May 04, 2017, 03:25:24 pm Quote from: bbeane – May 04, 2017, 02:14:35 pmX2, you may have leaking valve stems/seals, or beads sealing issues as John said. May be once a year I may add a small amount of air due to loss. I do however change air pressure if I go to a cold or hot climates for extended periods. X2+1. When these Michelins were replaced, all the stems were replaced with aluminum, plus dual seal caps and wheel studs. The tires were "Forced Balanced". Spendy, but, problems zero. Quote Selected
Re: Tires Reply #202 – May 05, 2017, 04:12:02 am I've been pleased with the performance of my Toyo tires I put on when I bought my coach. I pulled off 10 year old Michelins that scared the devil out of me just to test drive even though they looked perfect. I put M154's in front and something different in the back M670's which are very quiet for a traction tire just in case I go off roading or get caught in the mountains in unexpected snow which I have not yet done, thankfully in the Foretravel. Now, I've have 24K on the tires and keep the pressures at 110 front and 95 rear. Mileage is great at 10 to 12 mpg not towing so it keeps me happy and they feel more stable than the Michelins that were on it to start with. Have never had a problem with them leaking any air even over a six month period of non use where they have been maybe 2 or 3 degrees low but that could be the ambient temp being lower than when I put it in storage. They track very well on the highway and never had a complaint about wander. I had been caught years ago in the mountains pulling a large travel trailer, I bought in LA at Christmas, with snow so bad I had to roll down the window to see the median guard rail to know I was still on the highway I-5 going over the Siskiyous. Not one vehicle was seen in 20 miles of driving the fast lane at about 5 mph. Don't want a repeat of that one! Quote Selected 1 Likes
Re: Tires Reply #204 – May 05, 2017, 04:26:45 pm The ratings on those tires are G rated. Quote Selected
Re: Tires Reply #205 – May 07, 2017, 10:49:29 am Is there a special inflater / gauge with a non angle contact point for the outer rear tires? All of the inflaters that I have seen have a angled near side stem and wont fit in the little hole of the Alloy wheel. I really need a straight inflater that faces the outside wheel stem square.. Maybe it is just my wheels. Maybe I need to make an inflator with parallel stems. Did this make sense ? TIA, MM Quote Selected
Re: Tires Reply #206 – May 07, 2017, 11:08:33 am This looks like what you are looking for. 180 degree fittings: CH-370-LO Dual Foot Air Chuck Straight-On 180 DegreePierce Quote Selected
Re: Tires Reply #207 – May 07, 2017, 11:19:18 am Attach picture is best practice in these type questions, pretty easy to do once you get the hang of it Quote Selected
Re: Tires Reply #208 – May 07, 2017, 11:28:20 am Exactly what I need. Thankyou . Ordered and enroute for about 20$ total. Quote Selected
Re: Tires Reply #210 – May 09, 2017, 10:07:07 am Have 1000 miles on my Toyo 295/75-22.5 M177's now and am completely satisfied smooth as glass.John Quote Selected 2 Likes
Re: Tires Reply #211 – May 14, 2017, 02:00:33 pm Decided to check pressure on new toyos before I hit the road, first tire checked the valve stuck open, grabbed a tool and spare core and quickly replaced it . Rang les schwab and the sent mobile truck out to change all the valve cores , apparently I was fifth call this week ! Told it was Problem with supplier .Happy with the way they drive and the service from schwab Quote Selected
Re: Tires Reply #212 – May 14, 2017, 02:10:40 pm Quote from: Jimmyjnr – May 14, 2017, 02:00:33 pmDecided to check pressure on new toyos before I hit the road, first tire checked the valve stuck open, grabbed a tool and spare core and quickly replaced it . Schwab may have gotten a bad bunch of Schrader valves where they needed replacement, but the few times one has stuck open on me I just rapped it with the pressure gauge to get its attention. Quote Selected
Re: Tires Reply #213 – May 14, 2017, 02:21:34 pm Quote from: Travelin' Man – May 14, 2017, 02:10:40 pmSchwab may have gotten a bad bunch of Schrader valves where they needed replacement, but the few times one has stuck open on me I just rapped it with the pressure gauge to get its attention.It may not be the Schrader valves that are bad. The offshore tire gauges cause the Schraders to stick partially open and may bend some. I had the same problem with a new pressure gauge. The Schraders had been working fine for years. When I went back to my old gauge the problem was gone. I had to tighten the cap down until I could get to a town with a auto parts store. Good to carry the slotted type of valve cap so you can R&R the valve. Pierce Quote Selected
Re: Tires Reply #214 – May 14, 2017, 03:21:21 pm Good info Pierce.That slotted cap you mentioned is my favorite tool for the job. I stuck the cap in a short piece of rubber tubing to be able to turn it easier. But, I don't want to have to R&R a core on the outside dually. Quote Selected
Re: Tires Reply #215 – May 15, 2017, 01:39:02 pm The mobile tech showed me the bad core , it had a small cone shaped plastic ring on the tire side of valve which replacement didn't. He pointed out the ridge on the cone where it had wedged on the inside of the valve body . Sorry if thats not really clear , unfortunately I don't have photo of defective valve Quote Selected
Re: Tires Reply #216 – May 15, 2017, 04:01:45 pm This may be of interest to some of you that are curious about the tire construction terminology that various manufacturers use: Truck Tire Terminology 101 | TruckersReport.com Trucking Forum | #1 CDL...Steve Quote Selected
Re: Tires Reply #217 – May 15, 2017, 04:26:09 pm Quote from: Pierce & Gaylie Stewart – May 14, 2017, 02:21:34 pmIt may not be the Schrader valves that are bad. The offshore tire gauges cause the Schraders to stick partially open and may bend some. I had the same problem with a new pressure gauge. The Schraders had been working fine for years. When I went back to my old gauge the problem was gone. I had to tighten the cap down until I could get to a town with a auto parts store. Good to carry the slotted type of valve cap so you can R&R the valve. PierceExactly what happened to us....schraders were bent on both inners Quote Selected
Re: Tires Reply #218 – May 17, 2017, 10:35:04 am I have watched this thread and read most of it. To state that the tires need a certain cold pressure regardless of ambient temp/road temp, is interesting at best. Tires have an optimal pressure to run at . It is called "Target Pressure" for race cars and elsewhere. To hit the "Target Pressure" requires a cold pressure less than the TP. Many of you have seen NASCAR pit stops. The car leaves with 4 new tires and sparks fly from hitting the ground for about 3 laps , until the tires get in the target pressure range . Those tires leave the pits at around 17PSI and TP is near 24-28PSI. In our situation, setting the Bus tires at the target pressure of 100PSI, will yield an actual running pressure much higher, maybe 15-30# over , / Again, it depends on a lot of variables. If the ambient temp is 40* , and the cold pressure is 100#, later in the day , at speed, the pressure will be way over any reasonable target pressure. For those of you with TPMS systems, what happens on cold mornings? All of the lights are on of course because the pressure are low due to lack of heat. The tire will build pressure depending on heat build of course. Short story is that setting cold pressures, regardless of the actual situation, will result in a non optimal target pressure. Monitor your actual pressures mid afternoon , record what drives best and feels best. Stay above the cold pressure recommendations, error on the high side, but stay under 130ish running pressures. If you filled the tires in NY, drove to FL, you will need to let out about 10# as a rule. The opposite is also true , you willneed to add air as you move to colder roads and ambient air temps. Quote Selected
Re: Tires Reply #219 – May 17, 2017, 11:54:48 am Having spent several seasons driving in West Coast NASCAR and PRA, I was pretty much up on tire pressures. Depending on the track, we would frequently run four different pressures for the tires. I remember for the CCW track at Saugus, it was 17 psi left front, 35 psi right front with the rears around the mid 30's with the outside tire a couple of psi higher than the inside tire. For road race tracks like Riverside or Willow Springs (ran CCW), the pressures were much different depending on if it was a converted circle track car or one made for road racing. All four corners had weight jacks so pressures were dependent on how much weight was on the tire. They sway bars were also adjustable and frequently preloaded depending on how the car was handling so that effected the pressures we ran. Different Foretravels will have different tire sizes, different weights and depending on the tire load category, will have different maximum pressures. The aluminum Alcoa wheels are usually rated at 120 psi cold. The emergency vehicles I drove and city vehicles never chased the pressures. We checked once a week and carried maximum rated pressure as stamped on the tire. This was recommended by the tire manufacture (Cooper at the time) for our emergency vehicles. In one 5 minute emergency response in wet or dry conditions, I would make more just short of lockup stops than most people do in a lifetime. When public safety was at risk, we took the manufacture's recommendation very seriously.I never weighed my bus or our U300 but have used the same cold pressures while checking and adjusting every few days while traveling and never had a problem or even put a visible amount of wear on them. Pierce Quote Selected 7 Likes
Re: Tires Reply #220 – May 17, 2017, 08:24:07 pm Ok My existing pressure gauge jammed one of the new valve insert. Any recommendations for a quality gauge ? Quote Selected 1 Likes
Re: Tires Reply #221 – May 18, 2017, 07:45:36 am Milton makes some quality guages and inflaters.John Quote Selected
Re: Tires Reply #222 – May 19, 2017, 06:39:14 am Trying to maintain a certain running pressure for tires seems unreasonable. While checking pressures at rest stops, the sun side can often run 20 psi higher than the shade side. Of course, I don't usually race my coach on a circle track-it'll run for many hours in one compass directions. Setting cold pressure is good enough for me. Quote Selected 3 Likes
Re: Tires Reply #223 – May 19, 2017, 08:57:45 am Quote from: amos.harrison – May 19, 2017, 06:39:14 amTrying to maintain a certain running pressure for tires seems unreasonable. I agree. And, much more importantly, so to ALL tire manufacturers. All the inflation tables are for COLD PSI. That is "before driving at whatever the ambient temperature is".Yes, their engineers are familiar with the ideal gas law (affect of temperature change on change in pressure). Yes, that was taken into consideration if calculating the inflation tables.Yes, this IS different than race car tires. Not sure that is relevant, but ........... Quote Selected 2 Likes
Re: Tires Reply #224 – May 19, 2017, 11:48:33 am X2 on what Brett said. The engineers that design these tires kind of know what they are saying, but hey that's just me. Race tires have to last a few laps, our tires have to last years. Quote Selected 1 Likes
Topic: Tires