235/75/15 on a '93 Rodeo 4x4?

Can I run that tire size with no problems?

TireRack shows a 225/75/15 or 31x10.5x15 for my truck. I'm trying to save a few bucks and go with a smaller tire but 225/75 seems like a big jump from 31x10.5 which the truck currently has.

The overall diameter for the 235/75/15s is 29" and only weigh about 31lbs. Overall diameter for the 31s is 30.5" and weigh 44lbs.

90% of my driving will be done on the street and I will be taking quite a few trips to Tahoe for snowboarding.

Thanks in advance.

I have 265/75/16s on my '94 rodeo with 4wd and there isn't any issue. Gets around 20 miles to the gallon on the freeway but sucks around town.

I don't have my manual in front of me but I believe that size should fit. Check your owner's manual. In the back it should tell you the tire sizes Isuzu recommends.

Manual doesn't say squat about what you can and can not run for tire sizes; only gives you the stock and upgraded sizes for that year of Rodeo as reference.

Yes, you can run 235/75 R15's I've seen several Rodeo's with that size, no problem; if you have the 15x7.5 snowflake rim though (with upgraded 31x10.5 size from factory) - your truck may look different as I think the 235's are a lot skinnier then the 31x10.5.

I know my 265/75 16's are a slight tad wider then 31x10.50 15's - which is what I ran on my 1st Rodeo.

On the 1st generations, you have quite a range of size options - and I do think you can go down to the 225/75 15's if you wanted to; tough size to find in a good A/T tire though.

Well Im pretty set on getting the Kumho Road Venture AT (Any experience with these?). There's only about an inch difference in both diameter and width between the 31x10.5x15 and 235/75/15. The 235s are also about 13 lbs. lighter so that should free up some power and better gas mileage.

I don't plan on doing any off roading. So no point in going with the 31s right?

It's personal preference as to the size you choose; but I have to be honest with you, I use to run 245/75 16's on the same truck I now run 265/75 16's, I've seen no difference in gas mileage and only very slight difference in power issue - not even noticeable really.

I don't do any rigurous off-roading either, I mainly chose a taller tire because of where we live, I do more off-roading - if you will - on my own property then anywhere else. But I do have to say that we see a lot of areas - we travel a lot, sight-seeing, being adventurous, etc - that requires more groundclearance versus just being off-road.

If I were to tell you the BEST tire I've ever ran on this Rodeo - and mine is a 4x2 living in 4x4 country, I would have to say Bridgestone Revo's were the best set I've had out of 4 different kinds of tire on this truck. They were FANTASTIC in the snow and wonderful on ice even, in the rain - couldn't even tell you were in the rain.

Only reason I didn't put them on a 2nd time, when the 1st set wore out, was because they were on a 6-week backorder over a year ago.

Get whatever size you're happy with - you own/drive the rig. Then when that set wear's out, if you want to go bigger, then do as you wish.

My rodeo does have the snowflake wheels, maybe I should stay with the 31s.

I was also looking at the Revo's but they were out of my price range. Unless I go with 2 for now. Would it be ok to mix brands? Seems like the previous owner wouldn't rotate the tires because the fronts are down to the wear bars but the rears look almost new.

NO - I would not mix brands unless you absolutely have no choice in the matter; you will not like how it handles, rides, etc. and you will not get the true benefit of any tire by mixing it with another tread pattern.

I have done that before on a car & a truck, the car's seem to be ok - or at least the older cars did (haven't had a CAR in years), the trucks handled WAY differently and wanted to pull in different ways.

Go with what you can afford - but get all the same tires & tread.

Only concern I see, and call around to see if you can mount the 235 width on a 15x7.5 rim - I don't know, personally, but I think that may be too much of a stretch for that skinny of a tire, may look weird & handle differently too.

I know it's only an inch all around difference - but an INCH is a lot in the handling of a tire if it's mounted to an incorrect sized rim; been there, done that.

If it were me & I had the snowflake wheels (which are known as the Gold of rims for Isuzu owners), do it the way the trucks suspension was set for & get the 31x10.50 tires.

The reason they are heavier is they are built better and will last you longer; and they typically have 6-ply's versus only 4-ply's - that size IS a truck tire size and the weight of your Rodeo will not run them down as fast as a 4-ply tire.

I only once made the mistake of putting 4-ply tires on my 2nd Rodeo, those were the Revo's - LOVED the tires, but they were shot within 20k miles, seriously. I personally wouldn't mount another set of 4-ply tires on a truck that weighs more then 4,000#.

Tires are not cheap, I know, I have 3 trucks that all require the 16" sizes; I sure miss my '91 Rodeo that had your set-up, i.e. snowflake rims & 15" tires.

FWIW - I have heard good reviews of the Kumho tires, but have no vehicle experience with them. There is a set mounted on my farm tractor, but whole different ball-game.

NO - I would not mix brands unless you absolutely have no choice in the matter; you will not like how it handles, rides, etc. and you will not get the true benefit of any tire by mixing it with another tread pattern.

I have done that before on a car & a truck, the car's seem to be ok - or at least the older cars did (haven't had a CAR in years), the trucks handled WAY differently and wanted to pull in different ways.

Go with what you can afford - but get all the same tires & tread.

Only concern I see, and call around to see if you can mount the 235 width on a 15x7.5 rim - I don't know, personally, but I think that may be too much of a stretch for that skinny of a tire, may look weird & handle differently too.

I know it's only an inch all around difference - but an INCH is a lot in the handling of a tire if it's mounted to an incorrect sized rim; been there, done that.

If it were me & I had the snowflake wheels (which are known as the Gold of rims for Isuzu owners), do it the way the trucks suspension was set for & get the 31x10.50 tires.

The reason they are heavier is they are built better and will last you longer; and they typically have 6-ply's versus only 4-ply's - that size IS a truck tire size and the weight of your Rodeo will not run them down as fast as a 4-ply tire.

I only once made the mistake of putting 4-ply tires on my 2nd Rodeo, those were the Revo's - LOVED the tires, but they were shot within 20k miles, seriously. I personally wouldn't mount another set of 4-ply tires on a truck that weighs more then 4,000#.

Tires are not cheap, I know, I have 3 trucks that all require the 16" sizes; I sure miss my '91 Rodeo that had your set-up, i.e. snowflake rims & 15" tires.

FWIW - I have heard good reviews of the Kumho tires, but have no vehicle experience with them. There is a set mounted on my farm tractor, but whole different ball-game.
I see. Thanks for all your help Ramblin.