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General Discussion -> Mechanic's Corner | Message format |
FMC![]() |
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Regular ![]() ![]() Location: Lavallette, NJ 08735 | Hi all! Just picked up a few Accuride alloys, 19.5 10 lug wheels real cheap. Just wondering if I can actually use them on coach #75. If I can't, wanna flip 'em fast, get them out of my driveway! Can't find anything about the width on net. I believe that I have 7.5 width. Also, think I was told that 5 or 10 lug would suffice. Sorry, may be obvious to some of you, I'm a layman.... Thanks, Robert | ||
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hemi354az![]() |
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Extreme Veteran ![]() Location: Scottsdale, Aridzona | Perhaps you should have looked at all the other discussion about wheels for FMCs before making a great(?) buy on Accuride wheels. You don't say how many you bought. You would probably have found that the stock FMC takes a 5 lug on a 8 inch bolt circle wheel. The stock steel wheels are hub centered on a 6 inch hub. Know anything about lug centered aluminum wheels ? The stock FMC wheels studs are 3/4-16 thread. Wheel rim width is measured with a ruler. The tire maker specs the rim width(s) that each tire was made for. Just about everything you need to know about FMC wheels has already been posted on both FMC websites. Roll ON ! Lou #120 | ||
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FMC![]() |
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Regular ![]() ![]() Location: Lavallette, NJ 08735 | Had the opportunity to pick em up (spur of the moment), at a price that I will still make money on... Again, a layman when it comes to automotive, and I apologize, but did not understand any of that. Also, couldn't find anything, ANYWHERE on web. Forget it... Thanks for your reply. I'm just gonna sell em, and keep what I've got (originals). Sorry, I do know that someone mentioned 10 lug application as acceptable... I guess it's what I get for trying... won't bother anyone again | ||
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dkarnath![]() |
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Elite Veteran ![]() ![]() Location: Medford, OR | They are adapting 22.5" to the FMC. Not sure what kind of hub adapter is being used??? Or hub?? The 22.5's are 10 lug..maybe search into that? Who has the 22.5's, and what does it take to install on the FMC? Can 10 lug 19.5's be used in the same manner? I find the Yahoo site is a pain in the butt to search on now...just yesterday, I was looking for R Bradshaw brake info, and it was a joke trying to link all the conversations together into the same posts...I need to work on it more I guess??? Maybe someone can throw out a quick answer for these wheels.. | ||
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BigRabbitMan![]() |
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Expert ![]() ![]() ![]() Location: Cottage Grove, OR | The basic answer to the original question is that, no, the Accurides will not fit the FMC. The 22.5's were, to my knowledge, only used when the coach was conveted to a diesel engine as a diesel turns slower and the larger wheels were a means of getting taller gearing. I do not know of anyone that made the switch to the larger wheels while staying with the gas engine. As stated, the 22.'s require a number of changes. The ones that I have seen on FMC's were either 5 lug or 6 lug - neither of which are a commont configuration. | ||
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dkarnath![]() |
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Elite Veteran ![]() ![]() Location: Medford, OR | Yeah, I just found some pics of 22's they look to be 6 lug... They sure look great though...I bet it would be terrible doggy with the 440. | ||
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lagunacat![]() |
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Contributor ![]() Location: Prescott, AZ | I had seen another comment similar to the one here regarding 22.5's and the gas motor. For better or worse that is my set up. Have no idea why the PO went to the larger size wheel but my only speculation is he was hot for a diesel conversion and just never got to it because he got sick. He left behind years of research on diesel/tranny conversion set ups. Is this combination a bad idea? I need all new tires (steers are from 99!) so wondering if I should consider moving down to 19.5's before I invest in new rubber. All pro's and cons welcome. Vincente | ||
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andy1canada![]() |
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Elite Veteran ![]() ![]() ![]() Location: Victoria, BC. Canada | Since the original 17" wheels used on these coaches (eg. Michelin XCA tube-type IIRC) had an outside dia. of just over 33" and many of the 19.5" upgraded wheels could also be had in 33" - 34" dia, I would look for a 22.5" wheel that specs as close to this as you could. I know some 22.5" wheels are considerably taller than others. I'd check the Michelin website as well as Bridgestone, Cooper, Firestone, Yokohama etc. Hope this helps. Terry #846 | ||
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denshew![]() |
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Veteran ![]() ![]() ![]() Location: Canton, (Sixes) GA | Vincente; Are your 22.5's steel or Alcoa's? If Alcoa's I would probably try to stay with them - but again, I have no personal experience with the 440/22.5's. Will take a little bit longer to get up to speed but cruising would be nice/great as would the lower rpm and increased fuel mileage. Towing could be an issue as would the mountains (Cumberland and Wolf Creek Pass come to mind, lots of others). Probably a good idea to have a trans temp gauge and an exhaust pyrometer. We learn what our coach are capable of and make the best of it. Has your speedo been recalibrated? Reducing weight as much as possible would help on launch. Other enhancements - fuel injection etc.. There are a couple of coaches with the gas/22.5 setup but have never heard any positive/negative's. Other factors - how much you are going to use the coach, i.e. ><5000 miles a year, local stop and go or cross country may come into play. The Michelin 235/80/22.5 XRV tire is what I have been running on 890 w/the mighty 8.2L Detroit Turbo Diesel /Allison 545r /3.78 differential the last 8 (almost) years. | ||
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lagunacat![]() |
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Contributor ![]() Location: Prescott, AZ | Terry thanks for that info. I didn't realize the stock size were as large as 33". I like that option of sizing down the tire. I will check those manufacturers. Vincente | ||
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lagunacat![]() |
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Contributor ![]() Location: Prescott, AZ | I believe they are steel, Firestone. The PO was always towing his vehicle where he went. He may have had this set up by that FMC restoration company in Illinois. I know they advertise the 22.5 set up and I am pretty sure he paid a visit to them. Not sure about the speedo calibration. Maybe since he has replaced all gauges. I think the setup you have is what this guy was after. I have so much literature on diesels and Allisons you would think I was a former salesperson for these conversions😉. What he did do was have the engine rebuilt to maximize HP. As for me, I have no plans to put a lot of miles on this, probably less than 5k per, and don't anticipate any trips to high mountains. I may just option for a smaller diameter tire like Terry suggested. Thanks for your feedback! | ||
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B. Sitton![]() |
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Extreme Veteran ![]() ![]() ![]() ![]() ![]() ![]() Location: Ignacio Colorado | Something to think about using 22.5" wheels is braking. It would be a good idea to have the larger boosters and master cylinder to stop the larger diameter wheels. #920 would have arrived with the smaller boosters and master cylinder. Previous owner may have already made that change but it is something to look into. BS | ||
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lagunacat![]() |
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Contributor ![]() Location: Prescott, AZ | Well I am not sure of the size of the stock boosters. Mine are 12" and they have an anti-lock system attached called Brake Guard. I have uploaded a photo of the rear booster my albums if you want to see. Front is the same set up. | ||
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hemi354az![]() |
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Extreme Veteran ![]() Location: Scottsdale, Aridzona | http://www.ftc.gov/news-events/press-releases/1998/01/ftc-upholds-c... | ||
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