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Old 05-06-2016, 12:31 PM   #1
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22.5 inch tire comparison

I am replacing six tires next week. We have a minimal numbers of companies that can provide the tire I am seeking.

I have 245/75 22.5s on it at the present. Most local tire shops are prodding me to go to a 255/70 22.5 tire.

Even though I am not a big Michelin fan, they make a 235/80 22.5 specifically for the RV industry.

There is absolutely no cost difference between the group in fact, the Michelins are 25 bucks cheaper per tire than the bridgestone r250ed.

As in the case of now, I understand the tires will have to be replaced before they wear out..and not using them is probably the biggest enemy they have re cracking...not UV.

Two questions.

. the 80 should be noticeably softer riding than a 70 or 75 but will it give fuzzy handling of the truck..
. I have heard lots of neg about the Michelin but nothing in the last year..have they changed their formula ? I talked to two vary large trucking companies in the last couple of weeks..neither will run anything but Michelin..
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Old 05-06-2016, 10:42 PM   #2
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I just replied to a post about a mans Michelin tires being replaced due to sidewall cracks, they were date-coded June 2012.
Tire size difference can have a negative effect on your truck performance. Try this to compare sizes: https://tiresize.com/calculator/
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Old 05-07-2016, 02:26 PM   #3
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Ray,

Thanks for pointing me to that thread..

Actually, that change should give me a slight positive change..or at least I hope.

Thanks
grassy..
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Old 05-07-2016, 11:46 PM   #4
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Make sure you buy the same or higher load rating than your coach requires; NEVER lower.
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Old 05-08-2016, 12:14 AM   #5
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Quote:
Originally Posted by Ray,IN View Post
Make sure you buy the same or higher load rating than your coach requires; NEVER lower.
Tire stores around here will not sell/install tires that are sized/rated lower than what the sticker on your vehicle shows.
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Old 05-08-2016, 08:47 AM   #6
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I need to verify this...thanks for the heads up..
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Old 05-08-2016, 08:49 PM   #7
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Theoretically both tires are with about .5" different in diameter from what you have. That is, just doing the math 245 * .75 and so on. (or using the calculator above.)

In reality, you'd have to look up each tire's diameter. Two different manufacturer's tires in the same size can vary by a few percent.

(For example: a Michelin XRV 235/80R22.5 is 37.3" by math, 37.1" according to Michelin, an XZE is 37.4".)

In other words, I don't think diameter is something to worry about...
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Old 05-20-2016, 07:57 AM   #8
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I went with the 235 / 80 22.5s with dyna beads..

So far, I am impressed with the ride.. but I have been only bob tailing.. curious to see what it will be like under load..

Time will tell..
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Old 05-20-2016, 08:06 AM   #9
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Probably good to stick with Michelin. My MH has 235X80X22.5 and when I need new tires I've decided even if I might save a few dollars on another brand I'll get Michelin. Dave
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Old 05-20-2016, 08:50 AM   #10
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The odd thing was that the Michelin were one of the best prided tires..bridgestones were a lot more expensive.. Whenever I have looked into car / LDT truck tires, Michlin was always the most expensive.. only time will tell if I muffed up..
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