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Old 09-04-2013, 07:12 PM   #15
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Well, I might be able to get some BUT we have an '02 with Power Tech generator and the front axle has been replaced with a 14,600# axle which also included a new steering box. Then we replaced the stock wheels with Alcoa's and went to bigger tires so we're not a good "fit" to follow.
May I ask why you went with the heavier axle? And what size are your tires? I've had a set back, thought I just needed the flex pipe on the exhaust, turns out I need to replace everything from tha jac brake back. Ugh!
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Old 09-04-2013, 07:25 PM   #16
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May I ask why you went with the heavier axle? And what size are your tires? I've had a set back, thought I just needed the flex pipe on the exhaust, turns out I need to replace everything from tha jac brake back. Ugh!
Rig was overweight on the front axle at delivery BEFORE we ever loaded anything aboard, including us. After some wrangling back and forth and checking the laws Newmar decided to replace the axle with a 13,200# unit. But that gave us only a 45° wheel cut rather then 50° and I needed that extra 5° to get into it's spot beside the house. Spartan told me there was very little difference in cost of the 14,600# (55° wheel cut) unit over the 13,200# so I asked Newmar to go to it and they agreed. Turned out it cost them much more as the steering box needed to be changed out too. The 14,000# unit needed the steering box to work in reverse of the 12,000# and 13,200# units and they didn't think I'd go for turning the wheel right to go left and vice versa!!
Original tires were 275/70's and Spartan replaced the front wheels with heavy duty ones. The tires then needed 125 psi to carry 13,200#'s but the wheels only allowed 120 psi. Michelin then gave us a letter along the tires to be rated for the 13,200# axle rating with only 120 psi in them.
When we needed new tires I put wider Alcoa wheels all around and went to 305/70 tires in front. The rear is fine with the 275/70 tires.
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Old 09-04-2013, 07:35 PM   #17
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Wow! I haven't had the chance to weigh it yet. Coach has been running 150+ psi. So I've been working through that when I found the first exhaust leak...right now I'm just trying to ready it for vin inspection at the highway patrol office.
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Old 09-05-2013, 03:30 PM   #18
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150 psi seems pretty high what does your weight sticker on wall next to drivers seat say for MAX pressure?
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Old 09-05-2013, 03:38 PM   #19
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150 psi seems pretty high what does your weight sticker on wall next to drivers seat say for MAX pressure?
I thought he was "talking" about the air system when he said 150 psi. No tire used on RV's that I know of takes over 130 psi and most wheels only take 120 psi.
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Old 09-05-2013, 04:29 PM   #20
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Yes I was talking about the air system. I finished getting it all together last night then noticed the exhaust piping from the jake brake down is shot. New one ordered today. By the time I get to the front I might have a new coach.....
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Old 09-05-2013, 04:48 PM   #21
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150 psi seems pretty high what does your weight sticker on wall next to drivers seat say for MAX pressure?
I haven't seen a weight sticker on an RV yet that gave a MAX pressure and the pressure on an RV tire sidewall is the minimum required to support the maximum weight the tire can support, not a maximum. This is different than car and smaller tires, there it is indeed the max cold pressure the tire can ever have.
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