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05-23-2018, 01:47 PM
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#1
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Member
Join Date: May 2017
Location: San Diego
Posts: 88
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New Michelin tires
My Toyos are 8 years old , look New but thinking of putting New Michelins on the front. Michelin does not make 295/75/R22.5 which is what the Toyos are. What size should I use? 34'FDD.
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05-23-2018, 01:53 PM
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#2
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Senior Member
Winnebago Owners Club Freightliner Owners Club
Join Date: Oct 2009
Location: E WA or S TX
Posts: 4,046
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275/80 22.5 would be a good fit.
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04 Horizon QD, 12 Ford Flex, Excalibar, Brakemaster, Winter Texan, RVin! since 1974
Norm, Donna & Tinker Kat(RIP) 01 Z3
Life is a Timed Event, you only get One Go Around!
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05-23-2018, 01:56 PM
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#3
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Senior Member
Join Date: Jun 2012
Location: AB
Posts: 7,587
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Quote:
Originally Posted by rgvtexan
275/80 22.5 would be a good fit.
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I agree. Most truck tire centers will carry these if you need one in an emergency situation.
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2019 Unity LTV CB, pushed by a 2013 Honda CRV, BlueOx Baseplate, Aventa Bar & Patriot Brake
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05-23-2018, 01:56 PM
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#4
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Senior Member
Country Coach Owners Club Solo Rvers Club iRV2 No Limits Club
Join Date: May 2011
Location: Vancouver, WA
Posts: 37,725
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You'll have to watch the weight rating too, not just size.
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2009 45' Magna 630 w/Cummins ISX 650 HP/1950 Lbs Ft, HWH Active Air
Charter Good Sam Lifetime Member, FMCA,
RV'ing since 1957, NRA Benefactor Life, towing '21 Jeep JLU Rubicon Ecodiesel
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05-23-2018, 02:00 PM
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#5
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Senior Member
Join Date: Nov 2005
Posts: 7,383
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Michelin brand is up to you--lots of good input on tire brands from current post on this forum. My 2003 also came with 295/75r. I have used both 295/80r and 11r tires on my coach since the OEMs. These sizes are slightly larger in diameter so both speedometer and odometer are off--figure 3 MPH on speedometer and 5% on odometer [miles]. Am told Cummins can adjust engine ECM to accommodate larger dia. tires but have never bothered. RPMs are perhaps 100 lower based on displayed speed. Don't see any issues with slightly larger tires.
PS--the next step down is the 275/80r which is a considerably smaller tire in stance and appearance--not recommended--IMHO....
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Old Scout
2015 IH45 Foretravel
2003 Alpine 40' MDTS [Sold]
New Braunfels, Texas
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05-23-2018, 03:42 PM
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#6
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Senior Member
Join Date: Oct 2014
Posts: 7,867
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Yes, the Michelin equivalent of the 295/75R22.5 is the 275/80R22.5.
And, you want the H rated (load rating) in either.
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Brett Wolfe
Ex: 2003 Alpine 38FDDS. Ex: 1997 Safari Sahara. Ex: 1993 Foretravel U240
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05-23-2018, 05:40 PM
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#7
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Senior Member
Alpine Owners Club
Join Date: Jun 2004
Posts: 2,553
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Quote:
Originally Posted by wolfe10
Yes, the Michelin equivalent of the 295/75R22.5 is the 275/80R22.5.
And, you want the H rated (load rating) in either.
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Correct as to the 295 and 275 being the same height...40.3 vs 40.2 respectively. The 275 is 20mm narrower. Both sizes will scale the same weight in either G - 6175 @ 110 psi and H- 7160@120. Using Bridgestone and Michelin data charts below.
My 2000 has G rated with a 10,500 front axle. I installed BFG's and am happy with those, but will go Michelin or Bridgestone for our next set....which will be soon. If you take them off before they are 6 years old, you should ask for a credit. They will get resold as used for $150 or more to a trucker
https://commercial.bridgestone.com/c...ook%202015.pdf
https://commercial.bridgestone.com/c...ook%202015.pdf
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Tom, Patty, Hannah "The Big Dog" and Abby Kat, Indianapolis, Indiana 2000 Alpine 36' FDS 72232, 2005 Blue Bird M450 LXI Our Photos
"We live out in our old van. Travel all across this land. Drive until the city lights dissolve into a country sky, just me and you - hand in hand." Zac Brown Band
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05-23-2018, 06:19 PM
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#8
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Senior Member
Fleetwood Owners Club
Join Date: May 2015
Location: Michigan
Posts: 169
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Michelin tires
I am getting new tires in June, current tire is 275/70/22.5 Firestone and I am going to same size in Michelin. Current tires have H rating but Michelin has J rating. Am I setting myself up for problems? I assume a harder ride, anything else? Would I be better to go to 275/80/22.5 for G load rating?
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Roland, Linda, Matt, LuLu, Mo and Chewy
Fleetwood Bounder 38 N
2017 Jeep Grand Cherokee Limited toad
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05-23-2018, 07:00 PM
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#9
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Senior Member
Alpine Owners Club
Join Date: Jun 2004
Posts: 2,553
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Sorry I see I posted BFS twice. Here is the Michelin data book.
https://www.michelintruck.com/assets...ok_Jan2007.pdf
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Tom, Patty, Hannah "The Big Dog" and Abby Kat, Indianapolis, Indiana 2000 Alpine 36' FDS 72232, 2005 Blue Bird M450 LXI Our Photos
"We live out in our old van. Travel all across this land. Drive until the city lights dissolve into a country sky, just me and you - hand in hand." Zac Brown Band
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05-23-2018, 07:08 PM
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#10
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Senior Member
Alpine Owners Club
Join Date: Jun 2004
Posts: 2,553
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Quote:
Originally Posted by rfsod48
I am getting new tires in June, current tire is 275/70/22.5 Firestone and I am going to same size in Michelin. Current tires have H rating but Michelin has J rating. Am I setting myself up for problems? I assume a harder ride, anything else? Would I be better to go to 275/80/22.5 for G load rating?
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275/70R22.5 LRH is your original size? It is 2 inches shorter than the 275/80R22.5.
IMO no need to go up in load range unless you are overloading your tires, your axle can carry more than your OE tires (highly unlikely). You cannot reduce air pressure, it is the same size tire. No advantage that I can see from the limited info I have.
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Tom, Patty, Hannah "The Big Dog" and Abby Kat, Indianapolis, Indiana 2000 Alpine 36' FDS 72232, 2005 Blue Bird M450 LXI Our Photos
"We live out in our old van. Travel all across this land. Drive until the city lights dissolve into a country sky, just me and you - hand in hand." Zac Brown Band
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05-23-2018, 07:08 PM
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#11
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Senior Member
Join Date: Dec 2016
Location: So Cal
Posts: 1,368
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A friend of mine who owns a 2001 Monaco Dynasty had the 295 75 22.5 on it just changed to the 295 80 22.5 Toyos M144. I would go with the M144 Toyo's 295 80 22.5 16 ply instead of the Michelins and keep 3 grand in my pocket. See the chart for the difference of size
https://tiresize.com/comparison/
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2000 42' BEAVER MARQUIS AMETHYST w/tag 2 SLIDES CAT C12 425 hp SOLD.........
2014 Tiffin Allegro Bus 37AP
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05-23-2018, 07:13 PM
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#12
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Senior Member
National RV Owners Club Freightliner Owners Club
Join Date: Sep 2017
Location: Rice Lake, Wisconsin
Posts: 790
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Watch the Date Code on New tires! Have my 3rd set of Michelin's on order!
1st. set came in 1.25 years old! Sent them back. 2nd set was older yet, dealer turned them back before I seen them. Waiting now for fresh set right from Michelin.
Dealer has been great. They say warehouse will not check Date Code for them, order and return.
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2003 National Tradewinds LTC 7374 FL XC-Chassis IFS, Steer Safe, 8.3 ISC 350 Cummins, 3000MH Allison, 2023 Equinox, Blue Ox Tow-Bar, Brake Master Air Over Hyd
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05-23-2018, 08:28 PM
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#13
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Senior Member
Fleetwood Owners Club
Join Date: May 2015
Location: Michigan
Posts: 169
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Michelintires
My MH sticker calls for 275/70/22.5 G load rating. Michelin doesn’t make this size tire in G rating, it only comes as J rating. I have enough clearance to go to 275/80/22.5 G rating but that would change RPM/MPH rating because of difference in revolutions per mile. Which would be worse, J rating or RPM/MPH change?
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Roland, Linda, Matt, LuLu, Mo and Chewy
Fleetwood Bounder 38 N
2017 Jeep Grand Cherokee Limited toad
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05-23-2018, 08:47 PM
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#14
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Senior Member
Alpine Owners Club
Join Date: Jun 2004
Posts: 2,553
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Quote:
Originally Posted by 1doodadd
A friend of mine who owns a 2001 Monaco Dynasty had the 295 75 22.5 on it just changed to the 295 80 22.5 Toyos M144. I would go with the M144 Toyo's 295 80 22.5 16 ply instead of the Michelins and keep 3 grand in my pocket. See the chart for the difference of size
https://tiresize.com/comparison/
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This is a good guide and will bring you close to the actual size. If you stay with tier1 and tier 2 tires your pretty good. but for more accurate sizing, check the manufactures data book.
Here is the formula:
275/80R22.5
275 is width in mm
80 is the aspect ratio - % height of sidewall in relation to the width
275*.80=220 mm height next convert to inches 25.4mm/inch
220/25.4= 8.66 inches in height if sidewall
8.66*2(sidewalls)17.32 inches
17.32+22.5 (wheel diameter) 39.82
Now you know more than many tire salespeople regarding calculating size.
Enjoy!!
__________________
Tom, Patty, Hannah "The Big Dog" and Abby Kat, Indianapolis, Indiana 2000 Alpine 36' FDS 72232, 2005 Blue Bird M450 LXI Our Photos
"We live out in our old van. Travel all across this land. Drive until the city lights dissolve into a country sky, just me and you - hand in hand." Zac Brown Band
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