Need tire help

notjustair

Well-known Member
Bias tires, that is.

I use grandpas 35 Chevy 1 1/2 ton to chore everyday. When I got it from my uncle it had four different size tires on it out of all six - all of them cloth belting. I found that when new it could have had a range of sizes so I went with 6.50-20?s. Firestone reproductions. I?ve been really happy with the tires but noticed right away that the fronts were too big. It limited the turning radius (rubbed the drag link) and tucked up into the fender too far. Of course it made that Armstrong steering a good deal harder, too. Admittedly, the front fenders are less that stellar from 40 years of feeding silage so the fact that they don?t rub when turning is a miracle.

I never drove it when it had tires of the correct or even same size. My uncle doesn?t remember what it used to have but knew right away when he saw the 6.50?s on the front that they were too big. Never mind that he had a 7.00 on one front side!

I?m keeping the back duals. Going down to 6.00 on the front would make it two inches smalller in diameter. Should I go with those? If I recall, in the book anything from a 5.50 to 7.00 was an option. 5.50?s aren?t available in Firestone?s and I would like them to at least match so I guess unless the peanut gallery says 6.00 isn?t a big enough difference I won?t switch to BF Goodrich.

It?s not like it hauls a lot of weight anymore. I use it as a pickup between farms when I need to feed square bales or buckets of ground feed. I drive to town to the elevator when I need pallets of mineral or mixer base but it never gets more than 1000 pounds at most on it I would say.

Thoughts?
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Can't answer the tire question, but every time I see that truck, still on the job after all these years...

I'm thinking you may be in the record book!
 
nice, there is the proof that chevy is the longest running dependable truck. 650 x 20 tires were quite a common tire then.
 
I think it probably had a 6x32 on it originally that would have been the width by the diameter of the tire. IF there is still good tread on the old tires I would run them. Those old cotton tires would haul a load on them for the size. We have a couple of trailers around here that have those old cotton or rayon tires. One trailer has a spot where the tire has a hole through a 1/4 inch deep still runs fine. The other has a white stripe around the middle of it. These are old dayton wheels with the spokes and wheel locks to hold it on. When weather gets better I'll have to get a couple pictures of them.
 
A common thing years ago was one size smaller on front. Like 700 on rear ND 600 or 650 on front. Today you may be limited by what's available.
 
Look to see if you can adjust the spindle stops to limit travel. That would allow a simple good solution and keep it looking as good as it does with those nice tires. Great truck. Jim
 
My uncle had the original 207 rebuilt in 1967. I tore it down several years ago to clean out the pan and inspect it. There were still hone marks and she uses no oil - splash lubricated and daily use since 1963. A couple of years ago I found a hairline crack in the water jacket at number three cylinder. I just add coolant a couple of times a year and run it. She will go another 84 years.
 
On one of the car restoration shows, they bought an electric power steering unit and mounted it under the dash of a Studabaker(?) Avanti. I am sure it would have been a 12 volt unit and I doubt that you want to upgrade your system to 12 volts. Just a thought.
 
I have the old tires - one is in fact a 6x32. There was everything from a 5 to a 7x20 (32) on there. I thought the springs were shot until I got a set of tires that matched! Not that the springs have much arch left to them...
 
She?s still 6 volt with the 11 amp generator and cutout (almost a whopping 17 amps when it is cold!). I have swapped everything on this farm over to 12 volts except the 54 Chevy grain truck and the 35. They have both been in the family and farmed side by side for generations. They are the only things I will keep buying six volt batteries for. This farm is too big for trucks of this size so they get used more like pickups.
 
Is there an adjustable stop to limit the amount you can turn the wheels? If so it would be cheaper to adjust it than to buy new tires.
 

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