Community Forums

Gadget Man · 11-21-2006, 09:07 AM

I recently upgraded from a Winnebago Adventurer class "A" with the Ford V-10 chassis, to a Fleetwood Providence DP with a Freightliner chassis. On my V-10 gasser, I ran max tire pressure in the rear tires, and 10 lbs. under max on the front.

My DP has Goodyear G670RV tires, which are 275/70R22.5's. The sidewall on these tires calls for a max of 125 lbs, which seems awfully high. They currently have 80 lbs each, as inflated by the previous owner.

The Goodyear paperwork advises to take the coach to a set of scales, and gives a chart on what pressure to run based on the axle weight. I'm just wondering what pressure to run until I'm able to do so. The tires are evenly worn, so can I assume that 80 lbs. is sufficient for now?

Gadget Man · 11-21-2006, 09:07 AM

I recently upgraded from a Winnebago Adventurer class "A" with the Ford V-10 chassis, to a Fleetwood Providence DP with a Freightliner chassis. On my V-10 gasser, I ran max tire pressure in the rear tires, and 10 lbs. under max on the front.

My DP has Goodyear G670RV tires, which are 275/70R22.5's. The sidewall on these tires calls for a max of 125 lbs, which seems awfully high. They currently have 80 lbs each, as inflated by the previous owner.

The Goodyear paperwork advises to take the coach to a set of scales, and gives a chart on what pressure to run based on the axle weight. I'm just wondering what pressure to run until I'm able to do so. The tires are evenly worn, so can I assume that 80 lbs. is sufficient for now?

BIGRED1 · 11-21-2006, 02:36 PM

Craig, 80 lbs. is pretty low. I have a 38+' Monaco coach with a 29K GVWR and I run 105 in the front and 100 in the duals. This matches the GVW rating of the front and rear axles. This is conservative because I'm not running fully loaded, but I'd rather be a little over than under inflated.

Pusherman · 11-21-2006, 03:51 PM

I would suggest that you go to the Goodyear RV tire site. They have charts on the website relative to axle weight and tire pressure.

You need to get your coach weighed to be accurate.

The alternative is to use your max front axle GVWR and calculate the tire pressure required to support that weight. I bet it will be less than the max tire pressure. But if this info is not available, go to the max tire pressure inflation. End result will be a harsher ride if you don't need all that pressure, and possibly better handling at the lower pressure.

smlranger · 11-21-2006, 04:11 PM

Agree with the others...get the rig weighed and use GY's tire chart. I have a 36' rig with same tires and, based on my actual loaded weights, I run 105 fronts and 95 in rears.

rayw · 11-22-2006, 10:38 AM

Craig
I have a 39' moho with about the same weight as you; I keep 96' all around - this includes an additional 4 to 5 lbs per wheel for insurance. Thus far, handling is great.

GaryKD · 11-22-2006, 12:04 PM

To emphasize the previous posts recommendations, my signature coach street weight is 29K. I have Michelin tires the same size as the OP. Michelin charts say 95 in the front and 85 in the rear. This is what I run and after 19K miles the tires are wearing great, nice ride and no problems.

JerryKelly · 11-25-2006, 03:05 AM

Use the tire manufacture guidelines and the placard on the wall by the drivers seat. I run 110 in front, 85 in duals and 75 in tag. All of this is based on maximum axle weight rating.

rebelsbeach · 11-25-2006, 03:22 AM

<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by Craig P.:
I recently upgraded from a Winnebago Adventurer class "A" with the Ford V-10 chassis, to a Fleetwood Providence DP with a Freightliner chassis. On my V-10 gasser, I ran max tire pressure in the rear tires, and 10 lbs. under max on the front.

My DP has Goodyear G670RV tires, which are 275/70R22.5's. The sidewall on these tires calls for a max of 125 lbs, which seems awfully high. They currently have 80 lbs each, as inflated by the previous owner.

The Goodyear paperwork advises to take the coach to a set of scales, and gives a chart on what pressure to run based on the axle weight. I'm just wondering what pressure to run until I'm able to do so. The tires are evenly worn, so can I assume that 80 lbs. is sufficient for now? </div></BLOCKQUOTE>

I believe THIS was his question....

GaryKD · 11-25-2006, 12:59 PM

If the weight on the corners, axles and total coach is not known, I guess the only thing one can do is run the tires at max until the coach is weighted.

Gadget Man · 11-27-2006, 02:01 PM

UPDATE:

Ok guys, I returned yesterday from my first quick week-end trip with my Providence. The trip didn't start off so good.

I have a circular driveway that hangs a left in front of both of my garages. I had to park the coach in the circular portion, as I needed to keep the other side of the driveway clear for the concrete contractor that is extending my RV pad, so I can get this monster to fit.

I had to work Friday until 6:00 PM, so it was dark by the time I got home and we headed off for our shake-down cruise. I had my wife step outside and watch the coach as I maneuvered out of the driveway. I didn't move four feet when I heard this terrible scrape noise. She was watching the sides for me, so she didn't see the tree branch as it scraped across the top left edge of the front cap. Luckily, no real damage other than a broken clearance light lens....whew!

The rest of the trip went great. The only other problem uncovered was a plumbing leak under the kitchen slide, that leaked water into one of the storage bays.

Back to the topic of this thread! Sorry....

I had my rig weighed today finally. Weights are as follows:
Steer axle: 9080 lbs.
Drive axle (duals): 15,500 lbs.

I have Goodyear 275/70R/22.5 tires. My fresh water and fuel tanks were full. I was minus one person along with food and clothing when I had it weighed, so I added 300 lbs. to the steer axle, and 800 lbs. to the drive axle to come up with the above weights.

Now, unless I'm missing something, when I take the axle weights to Goodyear's tire pressure table, it looks like the previous owner was correct with a tire pressure of 80 pounds. Does this appear correct to you guys?