Tire Question

[BrianE]

Agree with Mango. 303 is goood stuff. Welcome back Jim.

And speaking of Phoenix, if anyone has considered buying a used Royale and is worried about product support, Royale Phoenix is the greatest. Owned and operated by the two main Royale engineers and assisted by Royale's gal friday, Vicky Jordan, Royale owners can be assured of excellent service and in most cases, immediate technical assistance.

What a pleasant change..............

[dalej]

Didn't know it was there! Royal Phoenix?

[BrianE]

http://www.royalephoenix.com/

[hhoppe]

Sorry Brian but my Royale questions to Royal Phoenix fell on deaf ears. No response of any consequence. Of course my unit was an 89 model and was out of the realm of importance.

[Yankee802]

deleted...please read on.

[Yankee802]

The seminar Jon was referring to also pointed out that it is ozone and not ultraviolet light that is the detriment to the tire compound.

By the way, NICE BUS!, you should be proud to have found a true classic.
If you keep it "right" you too may realize a "million bucks" at Barret Jackson in 30 years, and break even

Thank Jim, I appreicate it. I guess in 30 years I might be ready for another bus and might sell this one at Barret. Anyone remember that VW Bug/Beetle? I think it was like a '67 or so, MINT and with like 37 miles!!

Anyway, refering to the ozone effecting our tires, will the 303 Aerospace Protectant help at all with that? Is there any defense?

And my 110psi question was 'untill I know the weight at each corner, is it good/safe to put 110psi in each?'

edit: please see following post. (not that you wouldn't anyway)

[Yankee802]

I have 12/22.5 XZ2's on my baby, I just went on my maintenance run and weighed each axle. I'm 13300 steer, 17800 drive, and 9020 tags, for 40k total. (full fuel and water, empty waste, oh and me) I just checked the Michelin tire load chart, and WHOA, I'm way over in psi in my rears! I was feeling guilty having only around 105psi in each and not topping them to 110 as the previous owner told me to have.

PSI		75	80	85	90	95	100	105	110
kPa		520	550	590	620	660	690	720	760
LBS	SINGLE	10400	10900	11380	12010	12410	12810	13220	13740
	DUAL	19960	20760	21560	22700	23140	23580	24020	25060

Should I bleed out all the air from my rears? Should I realy go below 75psi?!?

What is kPa? And what is the LRH designation after my tire size in the chart? I don't remember seeing this on my tires.

[phorner]

I would not run any pressure less than the minimum shown on your tire chart.

The "LRH" refers to Load Range "H" and kPa is a unit of pressure measurement used in countries that typically use metric measurement. Stands for kilopascal and is just another way to measure/describe pressure.

[Jon Wehrenberg]

The excess pressure in the tag and drives is going to affect the ride and the wear pattern on the tires. If it were my bus I would run 110, 75 and 75, front to rear.

I'm going by memory so my numbers may be off a little but my recollection of my tire pressures on my '87 coach with 12.00 tires was 110, 80 and 75 or thereabouts.

If 303 is going to save the tires from ozone damage, I am going to presume those advocates of its use apply it between the duals and on the rear side of the tires as often as they apply it to the outside. Right??????

[dalej]

Geoff,

Our coach front is about the same as yours just a couple hundred lighter. We went with 315's so we wouldn't be pushing the limit. I just feel better with the added tire size.

I have always wanted to know if a tire such as a 12R that is rated at 13,000+ at 110 psi, is there a built in tolerance for when you go over a bridge that makes your bus feel like it's going to bottom out. That has to put so much extra weight on the tires for a few seconds.