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What are the best Tires?

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Gary Winzenburger:
We have the Michelin XZA3 as our front, steering tires and they seem very good. I didn't put these on, so I don't know what the differences are between the A2 & A3. Maybe someone can help. They were just inspected and found good to go for another season. I had been keeping the pressure at 105 lbs, but the service center reduced them to 90.
Good Luck,
Gary

Gerald Farris:
Gary,
If a service center reduced the pressure in your tires without having the weight of the coach, but just used the coach tire placard by the driver's seat, you probably have a problem. The weights that Beaver used for tire pressure in the 90s was very inaccurate in most cases. Therefore, your tires may be underinflated, and that can be the very worst thing that you can do to your tires because it is the number one reason for tire failures on a coach. That is the reason that I say to run your tires at maximum inflation unless you have the coach weighed, and then set the tire pressure by the coach weight.

Gerald  

Gerald Farris:
There is a problem with using XZA3+ Evertread tires, and that is that Michelin does not make them in the 295/80/22.5 size that most late coaches require. In XZA3+ tires you would have to use either 11R22.4 or 275/80/22.5 tires instead of the 295/80/22.5 ones that are recommended. These XZA3+ tires are rated at 670 pounds less capacity each in a single application than the 295/80/22.5 XZA2 Energy tires that are recommended. This loss in weight capacity can be dangerous on some coaches. However, if you do not need the weight capacity, the ZXA3+ tires should give you good service.

The XZA2 Energy tire are not an old line that is about to be discontinued. They are state of the art tires that use the latest technology to achieve a very low rolling resistance, and therefore save fuel.

Gerald

Gary Winzenburger:
Gerald,
What the sticker shows on our Marquis is the front axle has weight rating of 13,200 lbs with 275x70x22.5 tires at 110 lbs of air. What I have is Michelin 275x80's GreenX, XZA3 with reduced pressures to 90 lbs. I was running them at 105 lbs. I'm really confused on what I should have in both size, type of tire as well as amount of air pressure. I was running 100 lbs. on the rears, but they reduced those to 90 lbs as well. I'm not going anywhere soon, so I have time to adjust.
Thanks,
Gary

Jerald Cate:
I believe Michelin has made the decision for me since they don't make a XZA3+ in the 275/70R/22.5 the closest I can find is the 275/80R/22.5.  Looking at the spec sheet for the tires the 275/80R22.5 has a diameter of 40.1 inches.  I already have the XZA2 275/70R/22.5 on the front and their diameter is 38.0.  Sometimes in a slow tight turn I hear a tire rub so I don't think I can increase the diameter, plus I looked at my coach tonight sitting with all the air out of the system and it has not more than 2 inches clearance above the tire.  Looks like I'm going to wait on some XZA2 tires to be delivered.

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