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365 front tire wheel change
Is it mandatory? NO. Is it advisable? YES. The 365/70R22.5 has a carrying capacity of 10,500 pounds per tire at 125 psi while the 315/80R22.5 has a carrying capacity of 9080 pounds per tire at 130 psi. Newell recommended a maximum cruising speed of 65 mph for the 315 and 75 mph with the 365's. Coaches beginning with #443 (a 1997) can be fitted with the 365's.

Have your coach weighed BY TIRE POSITION. If you are close or over the 9080 pounds per front tire, you should change to the larger tires. If you are well under that weight on the front and don't mind driving at a reduced speed, you should be good to go with the 315's. Remember that the weight of each Newell is different. The model year, the number of front slides, the floorplan and how you load your coach will all affect the weight on the front tires. You will get more peace of mind and a smoother ride with the larger tires since you can reduce the tire pressure.
Michael Day
1992 Newell 43.5' #281
NewellOwner.com
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(10 hours ago)SwankyWheels Wrote: Is this a recommendation or is this change pretty mandatory?  Thanks

recommendation but not mandatory
Rolleyes Ashley Pardue Coach 589
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Mandatory if your coach weight is over the weight that is recommended for 315s.  If your weight is not over then it is personal preference.
Steve & Suzy Bare
1999 Newell 2 slide #531
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(10 hours ago)Fulltiming Wrote: Is it mandatory? NO. Is it advisable? YES. The 365/70R22.5 has a carrying capacity of 10,500 pounds per tire at 125 psi while the 315/80R22.5 has a carrying capacity of 9080 pounds per tire at 130 psi. Newell recommended a maximum cruising speed of 65 mph for the 315 and 75 mph with the 365's. Coaches beginning with #443 (a 1997) can be fitted with the 365's.

Have your coach weighed BY TIRE POSITION. If you are close or over the 9080 pounds per front tire, you should change to the larger tires. If you are well under that weight on the front and don't mind driving at a reduced speed, you should be good to go with the 315's. Remember that the weight of each Newell is different. The model year, the number of front slides, the floorplan and how you load your coach will all affect the weight on the front tires. You will get more peace of mind and a smoother ride with the larger tires since you can reduce the tire pressure.

Michael, I have only had this coach a couple of months but found a weight slip from one of the previous owners in 2006 showing the front axle at 17,300 LB
that would be about 8,650 LB per tire. That's within only 430 LB of the tires maximum rating. Is that to close? 

Dario Perini
#581 2001 45'
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I am just curious to know if one is running with the 315 tires, and the brakes are applied, does't the weight increase substantially in a panic stop? Dario, I put 365s on my 2001, #579.
2001 Newell #579
tow a Honda Odyssey
fun car: 1935 Mercedes 500K replica
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