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Discussion Forum

Front tire size RC ?

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04-17-2002 06:21:53

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Hi Folks, My time for a question.

Time to crank the old RC up to do some odd jobs around the place. Needs a front tire though. It has a very rotten Firestone 5-15 on one side and an old VW bug tire 5.60-15 on the other. Thought I would treat the old faithfull friend to a set of new front tires.

I think the correct size is 5-15 but want to make sure as it could be 4-15. Also the tires I am considering are firestones at TSC for around $35, or should I try to find a set of reproduction tires with the funny little square edging for more $ and difficulty to procure ?

Also for what it is worth, I had to pull the head off of it this spring as it stuck a valve last fall. Last time I had to do any work on the engine around 1960 when I put in a sleves set and ground the valves. I will comment about that in another post. These machines shure are tough little buggers aren't they?


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Phil Auten (Tx)

04-17-2002 18:32:38

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 Re: Front tire size RC ? in reply to DPOST, 04-17-2002 06:21:53  
My '39 RC has Goodyear 5.00x15 "Triple Rib" on the front. The original size was 4.75x15 per my A-C data book, but I doubt if you can find them today. However, this may be an old size designation and be the same tire as a current 5.00x15. As for the type of tires, several brands (and probably several styles) were used during production. Originally an RC might have had Goodyears, Firestones, Goodriches or any one of several other brands depending upon who the current supplier was when the tractor was built. I would just go with a three rib type and not worry about the correct police. Check with Miller tire at the link below. They carry lots of old tread designs that are not readily available elsewhere. You just might find something you like!

My 2,

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04-18-2002 06:46:15

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 Re: Re: Front tire size RC ? in reply to Phil Auten (Tx), 04-17-2002 18:32:38  

Thanks for the good information Phill & Paul.

I think my main concern is getting the correct size. I think I will go with the 5-15 Firestones at TSC. That way I can pick them up on the way home from work and install them this weekend. These tires are a 3 rib desing that seems appropriate for the tractor.

As for correct police, keep them away form me. The rear tires are in good condition but are not the same brands. Other than that the tractor is in pretty much original codition except for an incorret starter switch, no battery box, an enlarged exhaust pipe hole in the hood to accomodate a muffler, and some appendage that someone welded to the axle housings. It also has spent the last 45 years outside so the paint looks a bit rough.

In another lifetime this tractor was part of our small farming opperation in MN. It and my dad retired to a 20 acre hobby farm in 1972 when the state took the farm for a freeway interchange. Since then the tractor has seen light duty as a wagon puller and has a buz saw attached to it for cutting fire wood. The goal is to get the tractor back to good enough working condition to allow the tean age daughters to use it to pull a harrow for preping their riding arena. I suppose this means that I also have to get the electrical system working again as well.

Thanks again, I probably will bug you with more questions as I gradually fix this tractor up.


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Paul (MD)

04-17-2002 16:58:20

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 Re: Front tire size RC ? in reply to DPOST, 04-17-2002 06:21:53  

The factory size tire would be 5.00-15. As for the type of tire: do you want to please the correct police or do you just want good rubber on the front?

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Bryan Smith

04-18-2002 08:55:20

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 Re: Re: Front tire size RC ? in reply to Paul (MD), 04-17-2002 16:58:20  
Now if you really wanted to be correct you'd look for a double rib front tire ...! :-) My 1951 CA still has the orginal fronts and they're - you guessed it - two ribs instead of the three found today. I can remember the D17 Series I we used to own having two rib fronts and I think the WD and WD45 had them too.

Not planning on changing out my double ribs, but a triple rib sure is a nice tire. (No, I'm not a memeber of the "correct police" - not even sure if I even get my shoes tied right some days!)

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