Tire Size

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Brett
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Tire Size

Postby Brett » Tue Apr 10, 2012 8:15 pm

What are the biggest size tires I can put on my long bed 1981 PUP without modification?

I was also wondering about suspension modifications that would allow me to load the little guy without the bed collapsing to the ground. I know it's not a one ton, but if I throw a 2*4 back there it starts to sag. Any suggestions?

thanks

Brett
Brett (1981 isuzu pup longbed diesel, about as bare bones as it gets)

soot fart
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Re: Tire Size

Postby soot fart » Tue Apr 10, 2012 9:41 pm

You have 58hp with power nothing. Even 195/75/r14 is a stretch. In the NW 185/75/14 will keep your r's up climbing hills but freeway speeds will suffer especially if you're runnin a 4speed.

J.C. Whitney sells overloads for these rigs, used to be about 40 smackers. Jerry

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trooper T/diesel
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Re: Tire Size

Postby trooper T/diesel » Wed Apr 11, 2012 2:23 pm

its your ride and you can run the biggest tire you can fit on it should you wish to, but i think most people on hear would not advise that.


the odd ball in the 2wds is with a auto trans, they turn 200ish higher rpms then a 4wd, and don't have the space for a big tire like a 4wd does.
any thing under 3,200 at 60 with the auto trans is good. a 185/75/14 tire with a auto trans will put it at about 3,400-3,500 rpms :shock: :shock:


for most 2wds, about 2,600/2,700rpms at 60 is a good number to am for..
for a standard model that's a 185/75/14 tire at 2,600 rpms
for a mpg+ model that's a 195/75/14 tire at 2,700 rpms even though the rpms are higher, being that there's no O\D mpg is the same or better then a standard model.

for more power from a stand still up to speed or on hills, down size those one or two sizes. granted mpg at road speed will suffer a bit by doing so.

a 4wd model with a 4speed 30/9.50/15 tires are needed to get rpms down to about 2,750 at 60mph, there axles are geared the same as an auto trans, but you don't have the slip factor of the auto trans converter that does not lock up.


http://www.rocky-road.com/calculator.html
soot fart wrote:if god had intended for us to drive automatics, he wouldn't have given us two feet


rust free frame 1981 4wd luv for sale no engine\trans Cliky to see

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iPupGary
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Re: Tire Size

Postby iPupGary » Thu Apr 12, 2012 11:56 pm

I'm running 205R70-14 on a set of 6" rims. The 205R70-14 is very close to the overall stock tire height. My rims have about a 2" negative offset from the stock wheels so they stick out a small amount from the fender. I use front mud flaps.

DSCN0997.JPG


DSCN0988.JPG


-gary
1982 Chevy Luv 2wd short bed diesel w/ veggie conversion (under construction)
1999 Isuzu Trooper 3.5L Gas

luvcamas
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Re: Tire Size

Postby luvcamas » Fri Apr 13, 2012 1:11 am

ipupgarys tires are made out of chocolate, dark chocolate :lol:
1986 turbo/d 4x4 SB
2-1981 2wd diesel LB
1981 4wd diesel SB
1982 diesel 4x4 SB
1985 S-10 diesel extra cab 1981 2wd diesel SB /and several parts trucks

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iPupGary
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Re: Tire Size

Postby iPupGary » Fri Apr 13, 2012 12:14 pm

I found this on the LUVtruck.com web site:
=========================================================
Link: http://www.1010tires.com/TireSizeCalculator.asp

Site Name: Tire Size Calculator
Posted By: Randall Flagg
Description: Ever wonder what those oversize tires were doing to your speedometer? Here is a site that tells you how off your speedo is with different than stock tires on your LUV. Its easy to use, just enter the stock tire size (185 75 R14), then enter your tire size and compare the two. This site gives alot of info, like how many revolutions per mile each tire is traveling, and also how much off the new tires are compared with the old ones.

Snap1.jpg

==========================================================


-Gary
1982 Chevy Luv 2wd short bed diesel w/ veggie conversion (under construction)
1999 Isuzu Trooper 3.5L Gas

Gear60
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Re: Tire Size

Postby Gear60 » Thu Apr 19, 2012 5:37 am

Hi, Gary
Your pick up is very nice and classic.

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iPupGary
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Re: Tire Size

Postby iPupGary » Thu Apr 19, 2012 12:05 pm

Thanks. I love my 205R70-14 tires on my Pup. With the gas shocks and the new front end compoments from J. Lemond, this baby handles like a sports car. I'm loving it!

-Gary
1982 Chevy Luv 2wd short bed diesel w/ veggie conversion (under construction)
1999 Isuzu Trooper 3.5L Gas

Brett
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Re: Tire Size

Postby Brett » Thu Feb 12, 2015 7:57 am

This thread has sat for awhile but I'm back.

I am not interested in putting anything giant on my PUP but the options for 185 70 r14 are very limited.

It seems like any size up and I might be able to find a light truck tire and not just a passenger road tire.

Is anyone running a light truck tire (something with some tread)? What brand?

thanks
Brett (1981 isuzu pup longbed diesel, about as bare bones as it gets)

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OzarkDaredevil
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Isuzu vehicle(s): '81 Luv diesel 4x4

Re: Tire Size

Postby OzarkDaredevil » Thu Feb 12, 2015 10:38 am

Mine wears General Grabber A/T's in 27x8.5x14

The tires look like BFG A/T TA ripoffs. I'm not a fan. Sidewalls are really thin and handling took a dump. Clearance at the front wheelwells is super tight and I ended up cranking the torsion bars and adding helper bags at the back.

I don't recommend these tires.
Tom
'81 4x4 diesel LUV - daily driver

jasonw86
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Re: Tire Size

Postby jasonw86 » Thu Feb 12, 2015 10:50 am

TireRack.com seems to have a decent selection. Not a whole lot in the 14" LT flavor, but worth a look. I just picked up a set of 215/65/15 General Altimax RTs for my pup. I got them on closeout for $47 dollars a tire - $259 delivered to the front door. http://www.tirerack.com/tires/TireSearc ... iameter=15
DSC03645.JPG


Pretty much the same od as the stock tires, but way wider. I will probably be putting my old tires and wheels back on soon enough.
1984 diesel LS long bed 4x4
1983 diesel 4x2 long bed
1984 diesel 4x2 short bed MPG Plus
1984 diesel 4x2 automatic longbed
1982 diesel 4x4 LUV mikado shortbed
1986 gas LS 4x4 Trooper II 2 door
1984 turbodiesel 4x2 automatic longbed


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