wdbates
Oak Hills, ca
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Joined: 07/22/2003
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Well the tires on the Expedition are just short of 5 years old. 255/80/22.5 xrv Michlin's. If I replace with goodyear G670' 275/70/22.5s best price I got (from goodyear) is 3200 bucks total..If I buy replacement XRV Michlins from Costco and have them mounted and balanced by truck tire store is 2645 bucks. I have gotten prices for everybody that sells G670's and they all blame the extra cost on price of fuel.
Then Michlins on the Expedition have 53000 miles on them and still look good but are starting to show stree cracks in sidewall...
Geneva & Warren
04 34m expedition
300 ISB cummins/6speed
Oak hills CA
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flhtci-rider
Montreal, Canada
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Joined: 12/25/2005
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Both are a decent tire. Verify the dates before you have them mounted.. I can see going to a larger diameter to bet a better mileage but why narrower??? Also you will need to get you speedo calibrated or use a GPS for your speed and mileage in the future
 2006 Scepter
2008 24' Haulmark EDGE
2003 Grand Vitara
My best friend DW
1 fur ball Max (AKA - PITA)
And enough solar power so I never have to start the Genni
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Sully2
Cincinnati
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Joined: 01/20/2003
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flhtci-rider wrote:Both are a decent tire. Verify the dates before you have them mounted.. I can see going to a larger diameter to bet a better mileage but why narrower??? Also you will need to get you speedo calibrated or use a GPS for your speed and mileage in the future
HUH? You think going from a 255-80 to a 275-70 is a NARROWER tire??
2000 Country Coach Allure; Cummins ISC 330 HP; 71/2 - 8 MPG regardless
2002 Jeep Liberty
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stevelv
FullTimers at Last!
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Joined: 05/24/2006
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I thought the Candians were used to the Metric system. 275 is Wider than 255, not narrower 
The two tires are almost identical rolling radius so no recalibration is needed.
Now, what exactly was the question?
RV Park Finder
Fulltimers
2002 Beaver Santiam 38DST + Banks + 99 Jeep GC
DH,DW,Jake and Indie
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Ivylog
Blairsville, Ga. USA
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Joined: 06/30/2004
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I'd do a search on XRV as you may be the only person to get 5 years out of yours without serious problems. I from what I've read I would not buy a XRV for my DP.
04 Monaco Dynasty 42' quad slide
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jones4110
Champlin, MN
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Joined: 01/14/2004
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I just paid 424 each unmounted for Goodyear G670's. 275/70r/22.5.
I had to replace my former 670's due excessive outside wear at 22,000 miles. Don't really understand as I did an alignment at 11000.
Joan and Bruce
05 Excursion 39L
powered by 350 KittyCATS on a Spartan
2005 CRV SE toad (Blue Ox & Breakbuddy)
...and a "road dog" named Max
"May the wind be always at your back"
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1fastdad
mo.
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Joined: 08/27/2007
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Ivylog wrote:I'd do a search on XRV as you may be the only person to get 5 years out of yours without serious problems. I from what I've read I would not buy a XRV for my DP. The last two MH I owned had xrv on them and never had so much as a flat tire and I am sure this is true about 99% of the xrv owners. Some people read about a few people that have problem and without knowing fully why they had problem think that every body that has them will have problems.
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1fastdad
mo.
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Joined: 08/27/2007
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stevelv wrote:I thought the Candians were used to the Metric system. 275 is Wider than 255, not narrower
The two tires are almost identical rolling radius so no recalibration is needed.
Now, what exactly was the question? I believe you need to learn how to read tire sizes.
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