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Old 05-10-2008, 11:29 AM   #1
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Join Date: Mar 2008
Location: Southampton NJ
Posts: 146
My '01 Dolphin came with the Goodyears. At around 30,000 miles I replaced them...with Goodyears. No reason not to. Since day one, the "max" air pressure stamped on the sidewall said 85 pounds.
Getting the new tires mounted, I told the guy to put 80 pounds of air in each one. He did. Just last week...getting the motorhome cleaned up for this coming summer, I just happened to LOOK at the sidewall(s) and it said "Max 95 pounds"!!! What's this? Keep in mind, these tires now have 12000+ miles on them (with no problems). I can only see 4 of the 6. The passenger front and the two rear outside tires all say "95". However...the drivers side tire says "85"! I called Camping World...they did the install...and they said to run all of them at 85...and I'll have no problems. OK, but not really good enough. I e-mailed Goodyear with the problem. NEXT DAY a phone call from them. We went over the problem...and this person tells me that around December of 2006...the specs stamped on the tire(s) were changed. (Goodyear said I must have gotten one of the last 85 pounders and the first of the 95 pounders). I verified the load ratings and speed ratings were the same...EVERYTHING was the same except the "Max" air pressures....they said for all practical purposes they are the SAME TIRE...and after I gave them my individual tire weights...the front and rear axle weights and the total vehicle weight (gotten from the NJ State inspection) they said that even 80 pounds was too much...that I could really run 70 or 75...but 80 was harmless if I was happy with that...and I am.
So...SAME tire...DIFFERENT air pressure specs..this coming from the MANUFACTURER... I guess I have to believe it.

Really, I have to. After 12000+ miles of trouble free travels, nobody is going to "do" anything for me anyway. And I guess I will continue to buy Goodyears.
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Old 05-10-2008, 11:29 AM   #2
Senior Member
 
Join Date: Mar 2008
Location: Southampton NJ
Posts: 146
My '01 Dolphin came with the Goodyears. At around 30,000 miles I replaced them...with Goodyears. No reason not to. Since day one, the "max" air pressure stamped on the sidewall said 85 pounds.
Getting the new tires mounted, I told the guy to put 80 pounds of air in each one. He did. Just last week...getting the motorhome cleaned up for this coming summer, I just happened to LOOK at the sidewall(s) and it said "Max 95 pounds"!!! What's this? Keep in mind, these tires now have 12000+ miles on them (with no problems). I can only see 4 of the 6. The passenger front and the two rear outside tires all say "95". However...the drivers side tire says "85"! I called Camping World...they did the install...and they said to run all of them at 85...and I'll have no problems. OK, but not really good enough. I e-mailed Goodyear with the problem. NEXT DAY a phone call from them. We went over the problem...and this person tells me that around December of 2006...the specs stamped on the tire(s) were changed. (Goodyear said I must have gotten one of the last 85 pounders and the first of the 95 pounders). I verified the load ratings and speed ratings were the same...EVERYTHING was the same except the "Max" air pressures....they said for all practical purposes they are the SAME TIRE...and after I gave them my individual tire weights...the front and rear axle weights and the total vehicle weight (gotten from the NJ State inspection) they said that even 80 pounds was too much...that I could really run 70 or 75...but 80 was harmless if I was happy with that...and I am.
So...SAME tire...DIFFERENT air pressure specs..this coming from the MANUFACTURER... I guess I have to believe it.

Really, I have to. After 12000+ miles of trouble free travels, nobody is going to "do" anything for me anyway. And I guess I will continue to buy Goodyears.
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2001 Dolphin 5330 F-53 Chassis
Toad # 1 :2007 Chevy HHR/auto (4 down)
Toad # 2 :2011 Ford Ranger 4WD/auto (4 down)
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Old 05-10-2008, 06:05 PM   #3
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That's interesting but something doesn't quite ring true. I assume you are talking about the Goodyear 670 in the 245 size. I have 2 of those on my rig with the 85PSI rating. I am now looking to buy 4 more and they of course will be the 95PSI rating. What I found when looking at the old versus new load tables is that the tires have the same max load rating but the old version is at 85PSI and the new version is at 95PSI. If, as you were told, the tire construction is unchanged, I can only assume that the old ratings were marginal. However, I suspect there was a construction change that required higher inflation pressures to carry the same loads. Bottom line is anyone that has a mix of these tires on their rig should be using the new inflation tables to determine correct pressure based on axle loads but make sure they don't exceed 85PSI on the old version tires. That's my story and I'm sticking to it.
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Old 05-11-2008, 03:16 AM   #4
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Join Date: Mar 2008
Location: Southampton NJ
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Hello, Capt. !

There might well have been a construction change...Goodyear alluded to the higher "Max" air pressure because motorhomes were getting heavier....but there is nothing I read on the sidewalls to confirm this.

But I was satisfied with the Goodyear person and her answers...and AMAZED that I might have pushed a button that they felt was important enough to CALL me on the phone the next day!
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2001 Dolphin 5330 F-53 Chassis
Toad # 1 :2007 Chevy HHR/auto (4 down)
Toad # 2 :2011 Ford Ranger 4WD/auto (4 down)
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