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Rim Size and Tire Size Limits


55 Fargo

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3 hours ago, st63 said:

I don't take offense or view it as arguing at all...I'm only giving my opinion (for what it's worth) on the Yokohama tires based on my experience on actually using them on vintage trucks that I own or have owned in the past.  Maybe you missed the part where I said that I've used these tires on my own trucks.   I also explained the pitfalls of using too wide a tire on too narrow a rim, something I also learned from experience. (I had a '65 Chevy C10 where a previous owner had installed 235 series radials on the original narrow rims, and the truck was excessively hard to steer. The sidewalls also developed cracks from being mashed into a rim narrower than they were designed for. I know other people who've run similar size tires and consider them "fine" too, but it's going to lead to premature tire wear and stress on the rims if any serious miles are put on them)  I did the research on what tires would best fit my original rims and would be closest in size to O.E., and made my decision from there.   I've been happy with them, and that's what I base my opinion on. Besides the 65 C10,  I've also used them on everything from a 52 Dodge to a 53 IH, 67 Chevy and 68 IH.  None were "show trucks", but trucks that I used daily for work and put a lot of miles on.  You asked what tire would work on those old narrow rims and that's just my 2 cents, nothing more. 

Okay thanks point well taken, now on the Yokohama tire, being slightly narrower, and 1 inch or so taller, it has a stiff sidewall, and IMO a nice looking tire.

For my needs it is not the best option, gravel road, some cold weather winter driving etc, and that tire is limited to 65 mph, I drive that speed all the time, and do not want to beat the tires speed limit max all the time.I get it though it's a very nice tire, and believe it or not is stocked locally here at about $225 per tire in CDN dollars.

3 hours ago, greg g said:

I have 15 inch aftermarket steel rims on my P15, they are 5 inches wide. I run 205 75 fronts, and 225 75 rears.  With just under 40k miles on the fronts which I run at 34 psi, I have no unusual wear and probably another 10 to 15k treadwear left till replacement will be needed.  The rears run at 32 psi have about 25k on them have 9/32 of tread left and show normal tread wear.  Both tires recommended a 6 in minimum wheel width, but seem to be functioning just fine on the 5 inch wide wheel.  My car is a business coupe, and with tool box, bottle jack, and box of spare parts, and another box of necessary items there is probably around 65-80 pounds of stuff in the trunk as a constant.

I average about 3500 to 4000 miles per season added to the odo.

Hi Greg, yes I believe 5 inch wide wheels to be no problem with the tire sizes specified, I also believe for tires up to P 215 75 15 / p225 75 15, a 4 1/2 inch rim would work too.

I have a P 235 75 15 tire mounted on a 5 inch wide wheel looks fine and most likely would be no issues...

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For a good bad road and bad weather tire that will fit your stock wheels, check out the Yokohama Y720 - 7.00-15 Tractor Service Tire.

i run them on the front of my dune buggy and love them. I used to have a similar Nanco on the back of my truck and they were good too and most likely less expensive.

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10 hours ago, 59bisquik said:

For a good bad road and bad weather tire that will fit your stock wheels, check out the Yokohama Y720 - 7.00-15 Tractor Service Tire.

i run them on the front of my dune buggy and love them. I used to have a similar Nanco on the back of my truck and they were good too and most likely less expensive.

59 biz, while those look like great dune buggy tires, they definitely have no place on my truck....LOL

I could see David Freiberger putting these on the General Mayhem for baja desert videos.....LOL

These are totally aggressive, nothing I would want for mostly highway use...

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  • 2 weeks later...

Okay had some time after supper, so mounted a rather large P 235 75 15 tire on a 4 1/2 X 15 inch rim, no problem and it looks good.

This tire seemed big for a P 235 75 15, more like an LT tire.

Here is the result, as nobody has done this or is willing to admit they have done it....LOL

20170214_182503_resized_1.jpg

20170214_183141_resized_1.jpg

20170214_183421_resized_1.jpg

20170214_184720_resized.jpg

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I run Goodyear Wrangler ST P225/75R16 on my 4.5" stock rims for a few years now. No problems accept for a nail in the tire tread that I was able to plug and keep going. Below is a comparison of the 16s I am running to the 15" you show mounted. You will note the difference on sidewall height of the two tires with the same aspect ratio (75%) and tire diameter. The 225 is the taller of the 2 tires. If you are choosing rims you might consider rim diameter to optimize your fit and gearing. Just a thought.

 

235/75-15

225/75-16

Difference

Diameter inches (mm)

28.88 (733.5)

29.29 (743.9)

0.41 (10.4) 1.4%

Width inches (mm)

9.25 (235)

8.86 (225)

-0.39 (-10) -4.3%

Circum. inches (mm)

90.72 (2304.36)

92.01 (2337.03)

1.29 (32.67) 1.4%

Sidewall Height inches (mm)

6.94 (176.25)

6.64 (168.75)

-0.3 (-7.5) -4.3%

Revolutions per mile (km)

698.39 (433.96)

688.63 (427.89)

-9.76 (-6.07) -1.4%

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1 hour ago, Veemoney said:

I run Goodyear Wrangler ST P225/75R16 on my 4.5" stock rims for a few years now. No problems accept for a nail in the tire tread that I was able to plug and keep going. Below is a comparison of the 16s I am running to the 15" you show mounted. You will note the difference on sidewall height of the two tires with the same aspect ratio (75%) and tire diameter. The 225 is the taller of the 2 tires. If you are choosing rims you might consider rim diameter to optimize your fit and gearing. Just a thought.

 

235/75-15

225/75-16

Difference

Diameter inches (mm)

28.88 (733.5)

29.29 (743.9)

0.41 (10.4) 1.4%

Width inches (mm)

9.25 (235)

8.86 (225)

-0.39 (-10) -4.3%

Circum. inches (mm)

90.72 (2304.36)

92.01 (2337.03)

1.29 (32.67) 1.4%

Sidewall Height inches (mm)

6.94 (176.25)

6.64 (168.75)

-0.3 (-7.5) -4.3%

Revolutions per mile (km)

698.39 (433.96)

688.63 (427.89)

-9.76 (-6.07) -1.4%

Thanx for the info, well if I am concerned about gearing I need shorter tires....LOL

I am running a 3.23 rearend. So tall tires is not needed to reduce rpms.

I am not going to 16s, so will run P 235 75 15s on 5 inch wide rims...

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Although the tires in the pics look and are brand new, and never used.

The tire on the back was manufactured 1994 and the 1 in the front 2004, so they will not be used on the road, look great but not to be trusted for  highway use. only my opinion...

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Okay, here is a rim that had the PITA oval hole, the only 1 , that I own currently.

This was the proverbial rusty rim with a flat tire sitting with water and crud.

I used an oval shaped screw in valve, I had to slightly enlarge the oval hole with a dremel for a good fit.

I will see if this old rim holds air....LOL

Its very pitted, but this rim was sandblasted clean...gonna be a spare if anything

20170221_175422_resized.jpg

20170221_175427_resized.jpg

20170221_175436_resized.jpg

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Looks like your coming right along with your wider tires. Just a quick question, have you checked the driver front tire for interference with the pitman arm? I dont know the exact size, but when my dad bought my truck originally, it had wider tires on the stock wheels and it would rub the pitman arm when turning hard right. You can see the rubbing on the inside of the tire in the pic below.

Frame 2005.jpg

Edited by 59bisquik
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2 hours ago, 59bisquik said:

Looks like your coming right along with your wider tires. Just a quick question, have you checked the driver front tire for interference with the pitman arm? I dont know the exact size, but when my dad bought my truck originally, it had wider tires on the stock wheels and it would rub the pitman arm when turning hard right. You can see the rubbing on the inside of the tire in the pic below.

Frame 2005.jpg

Yeah had a little bit with the Ford Ranger rims, deeper off set, so tire wider, narrower rim, not an issue.

Many many guys run P 235 75 15 tires on there trucks, with no issues...

20170222_091416_resized.jpg

Edited by Rockwood
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4 hours ago, 59bisquik said:

Just thought I would throw that out there. I didnt know the wider tire size, but knew the wheels were the stock ones. Glad its working for ya!

Okay well thanks, we shall find out how this works with a bit wider tires and stock rims, will monitor this for sure...

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Here is a pic of a tire with a red rim, thought I would try it on for fun.

Now I do know a lot of folks really like red rims on old cars and trucks, especially rat trucks.

I think a lot of the Pilothouse trucks look great when wide whitewalls and red rims are part of the equation....

My truck outside eariler today...

 

20170223_174222_resized_1.jpg

20170223_125211_resized.jpg

Edited by Rockwood
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1 hour ago, 59bisquik said:

I like the red wheel look, but it depends on the color of the vehicle. With my yellow truck it would of looked like a McDonalds ad!

Welcome to McDonalds.....can I take your order ? ;)

 

Old Yeller 1.jpg

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I like the rim on the kitchen table with flowers in it ,it makes for a nice centre piece , it's just my wife isn't as understanding as yours  mine wouldn't let me bring parts past the garage door your so lucky . Ha ha 

IMG_7420.PNG

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Okay I installed 2 P 235 75 15 tires on 2 4 1/2 inch wide rims and 2 P 20170225_085806_resized_1.jpg235 75 15 on 5 inch wide rims, at home and I balanced them at home too.

I did not paint 2 of the rims yet, as I may change the entire color scheme....LOL

Took a 15 mile drive today, -14c outside roads dry, and highways dry, no issues with tires had the truck going about 60-65 mph.

I am sure my bubble balancer is not as good as a dynamic spin balancer, but it worked for me.

I had no issue with the tires on the narrow rims, on this short trip....

20170225_140628_resized_1.jpg

Edited by Rockwood
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