Re: Tire Brands Reply #25 – August 20, 2019, 05:27:48 pm Quote from: Caflashbob – August 20, 2019, 03:21:02 pmhere in worn concrete block so cal freeways.That sir is an understatement. I thought I was driving the Ho Chei Minh trail after a visit from a squadron of B-52's. Quote Selected 3 Likes
Re: Tire Brands Reply #26 – August 20, 2019, 06:23:26 pm Quote from: Caflashbob – August 20, 2019, 03:21:02 pmI looked at the uniroyals but the close to 120 psi required for my front axle loads versus the Michelin's at 97 kill my already bad ride quality here in worn concrete block so cal freeways.Smooth roads, 120 psi is no problem. Different problem herePerhaps that's why the Michelins have a zipper in the side. Let out the air if over 97 psi.Living and driving in California, we run 110 psi all around with fairly stiff sidewalls but other than an occasional annoyance on some of our highways, it's not a problem. I've driven worse roads in some other western states and even Texas after turning off I-40 at Santa Rosa in NM and traveling toward Lubbock on 84. Muleshoe and a couple other small towns were terrible. Roads through the Navajo Nation can be really bad too.Pierce Quote Selected 2 Likes
Re: Tire Brands Reply #27 – August 21, 2019, 08:53:09 pm If those Asian tires require less PSI than my Contis then I'm going to give them a try on the steers. I just beat my brains out in PA, NY and CT. Quote Selected
Re: Tire Brands Reply #28 – August 22, 2019, 01:10:35 am We had a bad experience with a nearly new Michelin tire a couple of years age and worse experience with their customer service afterward which I wrote about on this site. I attached a photo of a one year old tire (to the day) with less than 3,000 miles. I won't be buying Michelins again. Quote Selected
Re: Tire Brands Reply #29 – August 22, 2019, 10:20:20 am Quote from: Chuck & Jeannie – August 19, 2019, 04:47:07 pmThat's interesting! I have six 275/80R22.5 LRH Uniroyal RS20 tires on my coach sitting in my driveway. I now realize that it wasn't availablity but tire pressure that deterred me from getting the Uniroyals. My steer axle weighs almost 13,000 lbs and I'm running the minimum PSI for my Continentals, which is 110lbs.I just beat my brains out up in the Northeast and need a better ride. I'm on my cell now but when I get my laptop hooked up I'm going to look for either a 275/80R22.5(H) or a 295/75R22.5(H) that requires less PSI than the Contis. The only ones I've seen so far are Michelin's requiring 10PSI less.Hillbilly Deluxe is only a 36' coach, but I'm assuming that the 40' coaches weigh more on the steer axle, so what PSI are y'all running, what brand of tires and how's the ride over washboard roads? When we picked our coach up the PO admittedly only ran 85lbs in the front and had done so since new. The tires were Michelins and timed out so I replaced them with Continentals. When we were in Florida two years ago I went hunting for an accurate tire gauge and ended up buying an adjustable one from NAPA. I took it to a tire shop and had it calibrated using their air chuck that was labeled 100PSIand only used for calibration. We drove home shortly after that with 110lbs in the front tires using the newlycalibrated gauge and had a smooth ride. But when I got home and used the Parker Wilkerson gauge that is accurate to plus or minus 1lb at 150lbs I found the tires to be at only 95lbs. Quote Selected
Re: Tire Brands Reply #30 – August 22, 2019, 10:36:15 am Different brands have different construction so may offer a softer or harder ride. Worn or damaged shocks can also make a big difference. Today's premium shocks are progressive so while moving the first little bit, they allow it without much restriction but as the movement is increased, the resistance becomes greater. This can give a softer ride on mild imperfections in the road but nothing is going to take out the jar from a big pothole. Higher air pressure (within tire specs) makes tire damage less likely in these cases. Lower tires pressure means higher tire temperature and combined with high ambient and road temps can make the tire more susceptible to damage.Cheap fuel here means cheap roads. You can't expect the Autobahn when you pay $3-$4/gal for diesel.Pierce Quote Selected
Re: Tire Brands Reply #31 – August 22, 2019, 11:10:59 am Better yet............... who's got a 36' coach with a similar axle weight to mine that's only running 100psi or less, and if so what brand of tire are you running other than Michelin? Quote Selected
Re: Tire Brands Reply #32 – August 22, 2019, 11:23:42 am T-man- I have 36 ft U270 been living in it full time for 11.5 years and 100,000 miles now. I have always run 100 psi in all tires, never had a flat. Up until this past December when I replaced 2 fronts with Firestone FS591 steer tires ( 295/75 22.5 LRG) I had Michelin XZA1 on them. I wanted a stiffer sidewall and better price so I went with Firestone on my steer axle. Just recently I changed my rear axle tires to Auroa UF03- private label tires from Hankook. These are also 295/75 22.5 LRG tires and I am running 100 psi in them too. Specs on them are good and price was much better.Bad roads are all over and if you try to run from them you will find even worse roads. If the road is bad, I slow down. There is a minimum speed posted on many roads for a reason, so if it is too rough, save your coach, save yourself, slow down or find another way. May the wind be at your back on those smooth roads................... Quote Selected 1 Likes
Re: Tire Brands Reply #33 – August 22, 2019, 11:34:40 am LRG can use more air , steer better and not suffer ride quality . Quote Selected
Re: Tire Brands Reply #34 – August 22, 2019, 11:43:24 am T&K thanks for the reply. Can I ask your front axle weight and recommended PSI? Quote Selected
Re: Tire Brands Reply #35 – August 22, 2019, 11:54:36 am Toyo's 295 H. 12650 front axle weight. Run 110 lbs, max pressure is 125. Quote Selected 1 Likes
Re: Tire Brands Reply #36 – August 22, 2019, 12:12:23 pm my front axle was recommended 95 psi, probably similar weight to yours I thinkT-man - just looked at my plateFront axle 12000 lbs Quote Selected
Re: Tire Brands Reply #37 – August 22, 2019, 01:02:02 pm 295 Coopers in a 36' @ 100 psi. 2 rears were damages by the PO and a piece of steel caught the sidewall so a couple of Firestones on one side in the rear.P Quote Selected
Re: Tire Brands Reply #38 – August 22, 2019, 01:31:36 pm T&K thanks for the reply. Can I ask your front axle weight and recommended PSI?Here's what I'm dealing with; Quote Selected
Re: Tire Brands Reply #39 – August 22, 2019, 01:44:14 pm For you guys with the sharp eyes, I had them run the rear axle number and it is a 21,000 lb.assembly........................ which allows for a 34,500 GVWR. Quote Selected
Re: Tire Brands Reply #40 – August 22, 2019, 01:46:53 pm Quote from: Ted & Karen – August 22, 2019, 12:12:23 pmmy front axle was recommended 95 psi, probably similar weight to yours I thinkT-man - just looked at my plateFront axle 12000 lbsMaybe mine is heavier because of the AquaHot. Quote Selected 1 Likes
Re: Tire Brands Reply #41 – August 22, 2019, 01:48:40 pm Think you will have to go to a 295 H rated. Assuming you have a front slide? Quote Selected
Re: Tire Brands Reply #42 – August 22, 2019, 01:56:39 pm Quote from: jcus – August 22, 2019, 11:54:36 amToyo's 295 H. 12650 front axle weight. Run 110 lbs, max pressure is 125.We're only a couple of hundred pounds different in weight Jim, and running the same PSI. How do those Toyo's ride on a terrible road? Quote Selected
Re: Tire Brands Reply #43 – August 22, 2019, 02:02:22 pm Quote from: jcus – August 22, 2019, 01:48:40 pmThink you will have to go to a 295 H rated. Assuming you have a front slide?Yes, both AH and slide contributing to the weight. I forgot about the slide, I'm already running the (H) rated. Quote Selected 1 Likes
Re: Tire Brands Reply #44 – August 22, 2019, 02:28:15 pm Quote from: Travelin' Man – August 22, 2019, 01:56:39 pmWe're only a couple of hundred pounds different in weight Jim, and running the same PSI. How do those Toyo's ride on a terrible road? Can't compare to Michelins, but had Uniroyal's that were almost maxed out, so changed to Toyo 295 H, much better on bad roads. Quote Selected 1 Likes
Re: Tire Brands Reply #45 – August 25, 2019, 12:47:33 am Quote from: Pierce & Gaylie Stewart – August 19, 2019, 11:17:23 pmKorea makes first class cars with Kia and Hyundai so not unexpected that they would produce good tires. What did your Pro-Link show for mileage? Toad?PierceOn the the 13 year old dry rotted Michelins running 100 psi all around, I was showing 7.7 mpg on the last check with the Pro-Link Trip Data. It would take about 10 miles before the hardened tires would smooth out. This was on my regular 50 mile exercise run I try to do every two weeks. The trip is on a four lane highway with cruise set at 62 mph. It's mostly flat land with a few rolling hills, bridges and stop lights. Ambient temp around 85.The second identical run with the new Hankooks at 100 psi gave a reading of 8.2Today on the same run, I aired up to 110 psi on all tires and the ambient temp was around 90. No toad and no dash air running. The road temp was around 120 checked with an infra red thermometer. The reading on the Pro-Link was 8.5! That's 5% better than at 100 psi and 10% better than the old Michelins. Because of the heat buildup the psi rose to 115 for the fronts and 120 psi for the duals. I believe the pressures are within limits.I know this is not a scientifically controlled experiment, but it does indicate a significant improvement in mpg. Jerry Quote Selected 1 Likes
Re: Tire Brands Reply #46 – August 25, 2019, 10:41:49 am Nice job Jerry,Pro-Link is sure handy. What do you have for MPG since it was manufactured? It would take over 300 psi for the tires to pop and the Alcoa wheels are forged so they won't break, just bend. Huge safety factor. Lots of Hankooks on road race cars now.Pierce Quote Selected 1 Likes
Re: Tire Brands Reply #47 – August 25, 2019, 03:38:33 pm I have spent a lot of time developing my 136HP race car to run at higher air pressures then the norm. Simply goes faster . I first experienced this with my Autocross 1600 Pinto. 40#s of air would go 95MPH. 30# went 88. The Bus is the same . More pressure rolls easier ,goes faster , returns better fuel burn. Thats why I feel like I made a mistake purchasing the larger , heavier LRH , 295/75 tires. Cant cheat physics. Quote Selected 1 Likes
Re: Tire Brands Reply #48 – August 25, 2019, 04:33:41 pm Quote from: Protech Racing – August 25, 2019, 03:38:33 pm The Bus is the same . More pressure rolls easier ,goes faster , returns better fuel burn. Thats why I feel like I made a mistake purchasing the larger , heavier LRH , 295/75 tires. Cant cheat physics.Do you max the pressure on the 295s? If your former tires were smaller in diameter, your 295 should turn less engine RPM per mile so less piston travel perhaps offset slightly by a tiny bit more contact area and more throttle. Our Pro-Link shows exactly 8.0 MPG since new up from 7.9 when we purchased it about 50K ago. PO had a big construction trailer and we usually have the toad and live in the Sierras. All with the 295/75s maxed pressure all around. Pierce Quote Selected 1 Likes
Re: Tire Brands Reply #49 – September 01, 2019, 08:35:33 pm Quote from: Pierce & Gaylie Stewart – August 25, 2019, 10:41:49 amNice job Jerry,Pro-Link is sure handy. What do you have for MPG since it was manufactured? It would take over 300 psi for the tires to pop and the Alcoa wheels are forged so they won't break, just bend. Huge safety factor. Lots of Hankooks on road race cars now.PiercePierce,Looks like I'm getting a consistent 8.5 mpg with the Hankooks aired up to 110 psi, cruise set at 55mph. At 62, mpg drops to 8.2 which isn't too bad for the DD6V92.Odometer shows around 91000 miles on the coach. Total gallons used is 12574 which gives an average of around 7.2. Of course that includes idling, etc. When I first looked at the Pro-Link trip data on the coach there was a difference of about 15000 miles more on the odometer than the Pro-Link. The trip data mileage had probably been reset already by someone else. For now, I'll try to maintain between 62 and 65 on the highway because like Sammy Hagar sings, I can't drive 55!Jerry Quote Selected
Topic: Tire Brands