hemsteadc Posted October 7, 2021 Report Share Posted October 7, 2021 (edited) Needing 4 Michelin 255-80-r22.5 for my 2008 m2 -106 Sportchassis. Steers are fine. I'm hearing everything from they're discontinued, to back order, to 'we have them but transportation issues getting here.' Tirerack dot com says 'Backordered.' And I can't seem to find anyone who has anything decent in any other brand in that size. The best I could do was a Falken tire (cheap) from a dirty, pig-sty of a tire shop. At about 1/3 of the price of a Michelin I'm just slightly skeptical. And another shop wants to sell me Toyos that are a different size, claiming the 'sizes are different from each maker'. That's sounds fishy to me, but I could go measure them myself. So... what to do? Anyone out there with similar issues? Can I put a 255-70 on there without too much disruption? It never pays to wait to the last minute for truck issues. Trying to head south. Edited October 7, 2021 by hemsteadc Quote Link to comment Share on other sites More sharing options...
SWharton Posted October 8, 2021 Report Share Posted October 8, 2021 You can get a different size. Any tire store should be able to tell you the substitute size. Michelin makes unique sizes so many of us change size so we can buy a different, less expensive brand. Quote Link to comment Share on other sites More sharing options...
Pat & Pete Posted October 8, 2021 Report Share Posted October 8, 2021 How much different are the Toyos ? They make excellent tires . We've had them on our coach for about the last 30 thousand miles . The 70 series are a little wider than 80 series . How much room between your current mounted Michlins ? Quote Goes around , comes around . Link to comment Share on other sites More sharing options...
hemsteadc Posted October 8, 2021 Author Report Share Posted October 8, 2021 (edited) 12 hours ago, SWharton said: You can get a different size. Any tire store should be able to tell you the substitute size. I would hope so. Isn't this just a "semi" tire that any truck shop should have? 10 hours ago, Pat & Pete said: How much room between your current mounted Michlins ? About 3". The tread width is the first number, isn't it? 255 mm is about 10", but the actual tread with is more like 7.5". Not even close. Edited October 8, 2021 by hemsteadc Quote Link to comment Share on other sites More sharing options...
Pat & Pete Posted October 8, 2021 Report Share Posted October 8, 2021 2 hours ago, hemsteadc said: I would hope so. Isn't this just a "semi" tire that any truck shop should have? About 3". The tread width is the first number, isn't it? 255 mm is about 10", but the actual tread with is more like 7.5". Not even close. The tire width is 255 mm from sidewall to sidewall . The tread width will likely be less than that . 80 series tires will be a little taller than 70 series tires and the difference should have an effect on the speedometer readout . How much is ??? The reason I asked about space between is that if tires are too close , problems might crop up . 3 inches allows for some variation . Quote Goes around , comes around . Link to comment Share on other sites More sharing options...
hemsteadc Posted October 8, 2021 Author Report Share Posted October 8, 2021 28 minutes ago, Pat & Pete said: 80 series tires will be a little taller than 70 series tires and the difference should have an effect on the speedometer readout . How much is ??? Thanks. The speedo reads too fast as it is (actual 55 is about 58), so I pretty much use the GPS as my speedometer. Quote Link to comment Share on other sites More sharing options...
Pat & Pete Posted October 8, 2021 Report Share Posted October 8, 2021 1 minute ago, hemsteadc said: Thanks. The speedo reads too fast as it is (actual 55 is about 58), so I pretty much use the GPS as my speedometer. What are the manufacturers tire size recommendations for your rig ? Quote Goes around , comes around . Link to comment Share on other sites More sharing options...
hemsteadc Posted October 8, 2021 Author Report Share Posted October 8, 2021 (edited) 31 minutes ago, Pat & Pete said: What are the manufacturers tire size recommendations for your rig ? The door sticker says 255-80. It's getting moot as they are difficult to come by. I'm actually entertaining the idea of putting a set of 255-70 Falkens on there and wait out the shortage of Michelins. Edited October 8, 2021 by hemsteadc Quote Link to comment Share on other sites More sharing options...
Pat & Pete Posted October 8, 2021 Report Share Posted October 8, 2021 Michelins aren't the only ones getting short . We tried to buy a new set of Toyos this fall , but , ran into the same thing as you . Like you , we could get the no name brands easy enough . At least I've heard of Falkens . I have no idea as to reputation . Quote Goes around , comes around . Link to comment Share on other sites More sharing options...
hemsteadc Posted October 9, 2021 Author Report Share Posted October 9, 2021 There's a big tire shop at Love's in Quartzsite. I'm hoping to have success there. Quote Link to comment Share on other sites More sharing options...
Pat & Pete Posted October 9, 2021 Report Share Posted October 9, 2021 1 hour ago, hemsteadc said: There's a big tire shop at Love's in Quartzsite. I'm hoping to have success there. Good luck . Quote Goes around , comes around . Link to comment Share on other sites More sharing options...
hemsteadc Posted October 9, 2021 Author Report Share Posted October 9, 2021 Well, that's where they do big trucks. I'm a big truck. Quote Link to comment Share on other sites More sharing options...
hemsteadc Posted October 11, 2021 Author Report Share Posted October 11, 2021 Tire shop just called, said they'll be here this week! Yay! Would hate to head south with that on my mind. Quote Link to comment Share on other sites More sharing options...
Pat & Pete Posted October 11, 2021 Report Share Posted October 11, 2021 4 hours ago, hemsteadc said: Tire shop just called, said they'll be here this week! Yay! Would hate to head south with that on my mind. Excellent . Quote Goes around , comes around . Link to comment Share on other sites More sharing options...
GeorgiaHybrid Posted October 12, 2021 Report Share Posted October 12, 2021 Another thing to put in the back of your head is a 265/75r22.5:255/80R22.5 Michelin Substitute 265/75R22.5 Toyo M154Set Of 6Free On-Site Mobile Installation – Motorhome Tires Quote 2017 Kenworth T6802015 DRV 38RSSA Elite Suites2016 Smart Prime Link to comment Share on other sites More sharing options...
hemsteadc Posted October 13, 2021 Author Report Share Posted October 13, 2021 (edited) On 10/12/2021 at 8:19 AM, GeorgiaHybrid said: Another thing to put in the back of your head is a 265/75r22.5: thanks..that may result in nearly the same diameter as the -80, but, there's only 3" between my duallies as it is Edited October 13, 2021 by hemsteadc Quote Link to comment Share on other sites More sharing options...
Ray,IN Posted October 13, 2021 Report Share Posted October 13, 2021 (edited) The old rule of thumb for truckers distance between duals was 1 ½" minimum. This was to prevent stones from becoming lodged between duals then at speed throwing the stones behind you, and prevent dual tires "kissing" under load. Now we have this for guidance: https://www.doublecointires.com/wp-content/uploads/Double-Coin-Dual-Spacing-InfoSheet.pdf When considering a different sized tire, this is invaluable: https://tiresize.com/calculator/ Edited October 13, 2021 by Ray,IN Quote 2000 Winnebago Ultimate Freedom USQ40JD, ISC 8.3 Cummins 350, Spartan MM Chassis. USA IN 1SG retired;Good Sam Life member,FMCA ." And so, my fellow Americans: ask not what your country can do for you--ask what you can do for your country. John F. Kennedy 20 Jan 1961 Link to comment Share on other sites More sharing options...
noteven Posted October 14, 2021 Report Share Posted October 14, 2021 are 11R22.5 tires available? Quote "Are we there yet?" asked no motorcycle rider, ever. Link to comment Share on other sites More sharing options...
hemsteadc Posted October 15, 2021 Author Report Share Posted October 15, 2021 On 10/14/2021 at 8:46 AM, noteven said: are 11R22.5 tires available? I'm not familiar with that size spec. Tires done, crisis averted! Thanks all. Quote Link to comment Share on other sites More sharing options...
noteven Posted October 15, 2021 Report Share Posted October 15, 2021 7 hours ago, hemsteadc said: I'm not familiar with that size spec. Tires done, crisis averted! Thanks all. They are the tubeless version of the old 10:00-20 tire. 11R22.5 and 11R24.5 are the most common tire ever in western Canada, eh? Metric “low pro’s” can be a bit of a chase to find. Quote "Are we there yet?" asked no motorcycle rider, ever. Link to comment Share on other sites More sharing options...
hemsteadc Posted October 16, 2021 Author Report Share Posted October 16, 2021 14 hours ago, noteven said: 11R22.5 and 11R24.5 are the most common tire ever in western Canada, eh? I wouldn't know. I've never lived in Canada Quote Link to comment Share on other sites More sharing options...
Consolenut Posted October 18, 2021 Report Share Posted October 18, 2021 Little off topic but if there regrooveable and they probably are. I would go that route. Michelin encourages regrooving. Find and old school tire shop they can do it. Not recap but retread. I learned to do my own from an old school tire shop. Can only do drives though. You CAN NOT regroove steers so keep this in mind. That is the law. Quote Link to comment Share on other sites More sharing options...
hemsteadc Posted October 28, 2021 Author Report Share Posted October 28, 2021 (edited) On 10/18/2021 at 9:29 AM, Consolenut said: . Not recap but retread. I learned to do my own from an old school tire shop. I don't know what those carcasses are I see on the shoulder of the freeway, but I wouldn't be doing that. Edited October 28, 2021 by hemsteadc Quote Link to comment Share on other sites More sharing options...
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