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Old 07-19-2015, 07:49 PM   #1
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Tire Advice

My new to me 2005 HR Imperial has 17,000 miles. The previous owner just replaced the original front tires with Yokohamas. The drives and tag axle tires are original, so they are the first priority to be replaced.

The current original tires are Goodyear's. Any opinions on what tires would be a good replacement? Should I match the new Yokohamas?

Also the rears are 295/80 22.5. The new fronts are 295/75 22.5. Should they all be the same?

I am considering Centramatics as balancers. Good idea or a waste of money.

Thanks

Mike
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Old 07-19-2015, 08:16 PM   #2
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If I did my calculations correctly the 295/75R22.5 is 39.9" tall and the 295/80R225 is 41.08" tall. To my way of thinking this is not a good combination, as I believe that all of the tires need to be the same height. What does the data plate on the MH show for the correct tire size? If you can not put the recommended tires size on the MH, at least match them so that all tires are the same size.
Lets see what others have to say on this subject!
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Old 07-19-2015, 08:23 PM   #3
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Quote:
Originally Posted by cavalryman View Post
My new to me 2005 HR Imperial has 17,000 miles. The previous owner just replaced the original front tires with Yokohamas. The drives and tag axle tires are original, so they are the first priority to be replaced.

The current original tires are Goodyear's. Any opinions on what tires would be a good replacement? Should I match the new Yokohamas?

Also the rears are 295/80 22.5. The new fronts are 295/75 22.5. Should they all be the same?

I am considering Centramatics as balancers. Good idea or a waste of money.

Thanks

Mike

The tires don't all need to be the same size but all the tires on an axle should match. The 295/75s do not have as much weight capacity as the 295/80s. You need to make sure you aren't exceeding the capacity of the tires. You have a pretty heavy coach & the 75 profile tires may not be enough. They would likely be ok on the tag and or drive axles. Move them back there & put 80 profile on the steer axle.


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Old 07-19-2015, 08:30 PM   #4
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I have Centramatics on my 450 and my trailer--working as claimed.
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Old 07-19-2015, 08:34 PM   #5
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I agree with R2home. The main things are load rating, tire diameter and width- for duals. All tires should be the same size or it can affect handling.
Brand is not as important as some make it to be; Michelin is known for sidewall cracks, Goodyear is known for "rivering". I'm running Goodyear(7 yrs old) and contemplating buying Sailun truck tires when replacement time(10 yrs planned) arrives. They are about 1/2 the cost of Goodyear.

Some people run Centramatics and consider them money well spent. I however, prefer standard wheel weights.
I'm not familar with tag-axle setups, but you cannot put the 2 Yokohamas on the drive axle with the Goodyears of different diameters. Dual tires must be within 1/4" in diameter on the same side, and running 75 aspect on one side and 80 aspect on the other (1"+ diff) may not be good either. Larger tires on the drive axle will affect your speedo, pulling power, and to some extent braking.
Were it I, I would trade-in the new Yokohamas for a full set of new OEM size tires.
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Old 07-19-2015, 09:14 PM   #6
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The coach calls for 295/80's. My thought was to put the Yokohamas on the tag and whatever new tires on the drives and steer.
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Old 07-19-2015, 09:21 PM   #7
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The Yoks on the tag would not be a problem. Drive axle does not care what is on the front.
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Old 07-19-2015, 09:22 PM   #8
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Quote:
Originally Posted by R2Home View Post
If I did my calculations correctly the 295/75R22.5 is 39.9" tall and the 295/80R225 is 41.08" tall. To my way of thinking this is not a good combination, as I believe that all of the tires need to be the same height. What does the data plate on the MH show for the correct tire size? If you can not put the recommended tires size on the MH, at least match them so that all tires are the same size.
Lets see what others have to say on this subject!
Our Magna has 365/70 22.5's on the front and tag, the drive are 315/80 22.5's. This is the same as the Prevost I looked at a few weeks ago.
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Old 07-24-2015, 11:55 AM   #9
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If the Yoko's are proper load rating why not all YOKO'S. I put 6 new on my tropical 6k miles later very happy. I have a friend who has a trucking company and all they run are YOKO'S
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Old 07-24-2015, 04:53 PM   #10
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295/80R 22.5 are not a common tire size; however, 295/75R 22.5 is far more common. The "75's" are shorter and have a lower weight rating. As others have stated, the "75's" would be great tag axle tires. Stick with 295/80R 22.5 for the steer & drive axles.
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Old 07-24-2015, 06:01 PM   #11
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The Yokohamas have a weight rating of 6610 lbs, the original Goodyears are7830 lbs. Big difference!

I am definitely going to move the Yokohamas to the tag and probably replace the Goodyears with new Goodyears. They are a little pricey but this is not a good place to pinch pennies.
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Old 07-24-2015, 10:02 PM   #12
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Since you're not in Les Schwab territory, this might be a spurious recommendation. We've used Toyo tires on all the family vehicles for over 40 years. They are Schwab's "house" brand.

We've never had a problem with any of them, including those on our Class A. You might want to compare prices where you are with any tire store that carries them. We got 6 19.5" tires for our Georgetown, installed, dynamically balanced and a front-end alignment for about $2300. The store manager even checked the warehouse records to find the newest ones in stock. They were only 6 weeks from their mold date.
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