Tire/Wheel sizes question.

[ParadiseMJ]

My question today is:

 

I'm looking for some used wheels.  Is a tire/wheel combination of say a 245/75/16 or 17 bigger/taller than a 245/75/15.  I know it sounds like a slam dunk, dumb question ...but, it seems that 15" tires are getting harder to find and are more expensive

 

Also what other vehicles have the 5 x 4.5" lug pattern (I know Rangers do)

 

Thanks

[cj_sackett]

https://tiresize.com/calculator/

 

This should help. The 245 is the tire width and then the 75 is the height of the sidewall as a percentage of the width so 75% of 245mm (apox: 180mm). The third number is the wheel rim size and doesn't affect the tire but a 245/75/17 is about 2 inches bigger than a 245/75/15 because the rim is 2 inches bigger.

 

Also if you're looking for bolt patterns, there's a site that has all the bolt patterns on it and you can cross check it between vehicles and stuff, forgot the name of it though

[sinkrun]

Pretty sure the liberty wheels fit our bolt pattern they came in 15 and 16 inch.

[ParadiseMJ]

I know about the with and aspect ratio.  I was looking for this AND trying to figure that if I went with a 16 or 17 I'd be affecting thins much.   

 

http://www.roadkillcustoms.com/hot-rods-rat-rods/Wheel-Bolt-Pattern-Cross-Reference-Database.asp?LugCount=5&StudSpreadInch=4.5&StudSpreadMM=#axzz49IqDxjJm

 

Most CL listings just say "fits a Chevy" or "standard lug pattern" ...not very helpful when one is searching for suitable fitment. 

 

Thanks guys.

[gogmorgo]

The last couple XJ production years had a 16" option. ZJ's, KJ's, and TJ's also got some 16's from the factory, with the same 5x4.5 pattern and similar width and offsets.

I like this website for checking wheels specs, but I'm not sure they list by anything other than application.

[Eagle]

I know about the with and aspect ratio.  I was looking for this AND trying to figure that if I went with a 16 or 17 I'd be affecting thins much.   

 

http://www.roadkillcustoms.com/hot-rods-rat-rods/Wheel-Bolt-Pattern-Cross-Reference-Database.asp?LugCount=5&StudSpreadInch=4.5&StudSpreadMM=#axzz49IqDxjJm

 

Most CL listings just say "fits a Chevy" or "standard lug pattern" ...not very helpful when one is searching for suitable fitment. 

 

Thanks guys.

 

As CJ_Sackett already explained, if the other numbers are the same, the wheel size adds diameter. A 245/75-15 is 29.5" in diameter. A 245/75-16 is 30.5" in diameter, and a 245/75-17 should be around 31.5" in diameter.

 

To put this in perspective, a 245/75-15 is already two sizes bigger than anything that came from the factory on an XJ or MJ. At 30.5" in diameter, a 245/75-16 is basically the same size as a 31x10.50-15, which means that a 245/75-17 is roughly the same as a 32-inch tire.

 

I'd say that makes a difference. Going from stock tires to 31s is a difference of 10% to 11%. I've never even figured out the difference between stock and 32s -- probably 15% or more. I think that's significant.

[Eagle]

The last couple XJ production years had a 16" option.

 

Yes, but it was a 225/70-16. Note the change from 75-series to 70-series. I have a 2000 XJ Sport with 225/75-15s and my wife's 2000 XJ Classic has 225/70-16s. The tires are the same diameter -- almost exactly.

 

225/75-15 = 28.3"

225/70-16 = 28.4"

[gogmorgo]

Yes, but it was a 225/70-16.

 

And the OP was asking about used wheels.

[ParadiseMJ]

 

 

225/75-15 = 28.3"

225/70-16 = 28.4"

 

 

 

Right, the AR changes the height up/down but if you have taller wheels and the same width and AR the finished product will be taller.  One inch of wheel should give you 1/2 of height  The calculator explains the sizes and application pretty well.  I wasn't dissing anyone, just trying to explain how frustrated I was with listings where nobody knows (or thinks about) the measurements of the things they're selling, or even lug patterns.  Even when I call them and they say "It has five holes".

[FrankTheDog]

And that's as much effort or knowledge they want to put in to it.

Not everybody lives and breathes automobiles.

You probably don't want to buy from those folks anyways.

[ParadiseMJ]

And that's as much effort or knowledge they want to put in to it.

Not everybody lives and breathes automobiles.

You probably don't want to buy from those folks anyways.

 

You may be right about that, the folks that is.  Although I've never made a bad deal on CL yet.

[Rockfrog]

Patriot wheels also have the 5 on 4.5" bolt pattern and can be found in 16 and 17" sizes. I believe the newer Liberty's also have a 17" option as well.

Or there is the "controversial" Charger/Challenger/Magnum wheels with 16, 17, 18 and 20" sizes available.

If you are looking for an equivalent size to what you started with, drop the aspect ratio by 10 for each inch you increase the wheel size (as demonstrated in the previous posts). It's not exact but fairly close.

 

 

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[Eagle]

 

And that's as much effort or knowledge they want to put in to it.

Not everybody lives and breathes automobiles.

You probably don't want to buy from those folks anyways.

 

You may be right about that, the folks that is.  Although I've never made a bad deal on CL yet.

 

 

That's because you know enough not to buy a set of tires and wheels that won't fit your vehicle. There really are people out there who think that "15-inch" is the only description necessary. And then there's the aspect ratio -- that's just black magic to many people. Ask them about that and their eyes glaze over.

[ParadiseMJ]

Yep,  a friend of mine just bought some 255/70/16's and I told him they were basically the same size as 31x10.5/15's...he said he had never heard of any measurement other than the metric..."theres no such thing as 31x10.5's" . So Frank the Dog is right...not everyone lives and breathes vehicles.  They both measure out around 30.5" height wise.

[Eagle]

Yep,  a friend of mine just bought some 255/70/16's and I told him they were basically the same size as 31x10.5/15's...he said he had never heard of any measurement other than the metric..."theres no such thing as 31x10.5's" . So Frank the Dog is right...not everyone lives and breathes vehicles.  They both measure out around 30.5" height wise.

 

30.1", actually. 265/70-16 is closer to a 31x10.50-15, at 30.6" diameter.

[dasbulliwagen]

The Chrysler Dodge LX platform (300, Charger , Magnum, Challenger) wheels may have a little contoversy, but they are usable and Ive seen guys on Naxja using them. They also have the same hub diameter (at least the steel 17" one I tried before did). The police versions are equipped with an 18" steelie that I really like, but I ended up going with a set of 17" JK takeoffs, with Spidertrax adapters. That's another option for you, but sounds like you are looking for a budget priced set of bolt ons you don't have to worry about adapters with. Good luck.

[HOrnbrod]

I just installed a set of Cooper Discoverer A/T3 265/75R15's to replace the my existing 31's. The 31" tire's actual size was 30.5"x8.5"x15. Converting the Coopers from metric to inches their actual size came out to be 30.6"x7.7"x15. Basically the same size, just .8" narrower tread, which is exactly what I wanted. And they were 7 lbs. lighter - not much but it helps.

 

So use the manufacturer's web site "actual size" tables to compare the old and the new sizes and you can usually find the exact size you are looking for.

[ParadiseMJ]

I have 235/75/15s' on there now and they're "big enough" (especially with the 3.07's) but I have found lots of (lightly used) 16" tires.  Like ALOT of them, but no 16" wheels with a 5 x 4.5" pattern.  The 235's have plenty of meat on them and measure out at just under 30".  Other 235's are in the 28" range. I suppose my original question would be, would 16" wheels be just a skosh taller overall with 235's or 30's

 

I still have the 4.10 D30 waiting in the wings, when I get the rear 4.10 I'll get a little more serious  I'm on a super tight budget (AKA "according to my wife"), and since the Jeep isn't my DD I'm just pokin' along on it

[schardein]

I just installed a set of Cooper Discoverer A/T3 265/75R15's to replace the my existing 31's. The 31" tire's actual size was 30.5"x8.5"x15. Converting the Coopers from metric to inches their actual size came out to be 30.6"x7.7"x15. Basically the same size, just .8" narrower tread, which is exactly what I wanted. And they were 7 lbs. lighter - not much but it helps.

 

So use the manufacturer's web site "actual size" tables to compare the old and the new sizes and you can usually find the exact size you are looking for.

Picture?

[HOrnbrod]

 

I just installed a set of Cooper Discoverer A/T3 265/75R15's to replace the my existing 31's. The 31" tire's actual size was 30.5"x8.5"x15. Converting the Coopers from metric to inches their actual size came out to be 30.6"x7.7"x15. Basically the same size, just .8" narrower tread, which is exactly what I wanted. And they were 7 lbs. lighter - not much but it helps.

 

So use the manufacturer's web site "actual size" tables to compare the old and the new sizes and you can usually find the exact size you are looking for.

Picture?

 

AAARRRGGG - Sunny day..........

 

 

[Rockfrog]

The Chrysler Dodge LX platform (300, Charger , Magnum, Challenger) wheels may have a little contoversy, but they are usable and Ive seen guys on Naxja using them. They also have the same hub diameter (at least the steel 17" one I tried before did). The police versions are equipped with an 18" steelie that I really like, but I ended up going with a set of 17" JK takeoffs, with Spidertrax adapters. That's another option for you, but sounds like you are looking for a budget priced set of bolt ons you don't have to worry about adapters with. Good luck.

I like them the best.

I have a black and a silver set.

 

 

 

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[benjy_26]

Those silver ones really pop! They're off of Dodge sedans?!?!

[schardein]

 

 

I just installed a set of Cooper Discoverer A/T3 265/75R15's to replace the my existing 31's. The 31" tire's actual size was 30.5"x8.5"x15. Converting the Coopers from metric to inches their actual size came out to be 30.6"x7.7"x15. Basically the same size, just .8" narrower tread, which is exactly what I wanted. And they were 7 lbs. lighter - not much but it helps.

 

So use the manufacturer's web site "actual size" tables to compare the old and the new sizes and you can usually find the exact size you are looking for.

Picture?

 

AAARRRGGG - Sunny day..........

 

 

 

Sweet.  That stance/height is exactly what I want mine to be eventually.

[Rockfrog]

Those silver ones really pop! They're off of Dodge sedans?!?!

These ones came off the Chargers, although I've seen them on the Magnums, and challengers around here.

Dodge type 2325 and they readily accept the newer JK wheel centers.

I'm thinking or painting the black ones a graphite grey color.

 

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[mikekaz1]

 

 

I just installed a set of Cooper Discoverer A/T3 265/75R15's to replace the my existing 31's. The 31" tire's actual size was 30.5"x8.5"x15. Converting the Coopers from metric to inches their actual size came out to be 30.6"x7.7"x15. Basically the same size, just .8" narrower tread, which is exactly what I wanted. And they were 7 lbs. lighter - not much but it helps.

 

So use the manufacturer's web site "actual size" tables to compare the old and the new sizes and you can usually find the exact size you are looking for.

Picture?

 

AAARRRGGG - Sunny day..........

 

 

 

 

 

whered you get that chrome light bar?