37” tire that is really 37”🤔

[FLUndertaker]

I love my 37-12.50 ridge grapplers, iirc they are about 35.75” mounted with 30psi. Should I feel slighted they owe me an inch snd a quarter? Lol.

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[Jeeperjamie]

Just had my Pat 37's mounted and tire guy said all were so out of round, not to expect a smooth ride. Not very excited right now. Is this common with this size/brand?

I haven't heard anyone on here talk bad about them but I have read and had a few guys locally say they had experienced them being out of round before and also being hard to balance.

 

[Wheelin98TJ]

Get 38-39" tires if you want something taller than tires that say 37 on the sidewall.

 

[Gliebig]

I haven't heard anyone on here talk bad about them but I have read and had a few guys locally say they had experienced them being out of round before and also being hard to balance.

First short test drive. Felt fine.

 

[Jeeperjamie]

First short test drive. Felt fine.

Sometimes they tell you that and everything ends up fine. I've mostly heard nothing but great things about them. They look great on your Rig.

 

[OnlyOne]

Get 38-39" tires if you want something taller than tires that say 37 on the sidewall.

This. If you want a 37, buy one that says it on the sidewall because that’s what they are. This whole tire height thing is a retarded internet myth. The sizes have been what they have for years. Lift manufacturers use the size for their own testing. A 37 is a 37.

 

[Jeeperjamie]

This. If you want a 37, buy one that says it on the sidewall because that’s what they are. This whole tire height thing is a retarded internet myth. The sizes have been what they have for years. Lift manufacturers use the size for their own testing. A 37 is a 37.

I think they mean one that measures 37 once mounted. I don't think they make a tire that actually measures 37 for a 37 or 35 for a 35 once mounted, that's no myth that's facts. It may say 37 12.5 17 on the side but most only measure 36.6 and some even 35.7 if you buy a BFG 37. Just saying, that are asking for a tire that actually measures that. The other poster is just saying if you want a actual 37 then you will need to buy a 38 or 39.

 

[OnlyOne]

I think they mean one that measures 37 once mounted. I don't think they make a tire that actually measures 37 for a 37 or 35 for a 35 once mounted, that's no myth that's facts. It may say 37 12.5 17 on the side but most only measure 36.6 and some even 35.7 if you buy a BFG 37. Just saying, that are asking for a tire that actually measures that. The other poster is just saying if you want a actual 37 then you will need to buy a 38 or 39.

That was my whole point. There isn’t one that is a 37 Unless you go up a size. That’s why I quoted his post. The myth is the stupidity around the whole people try and measure these. Nothing has changed. What is on the side wall is what they are. If you want a “37“ buy the one with the tread you want. That’s fact. The rest is myth. If you want a ”40” then buy that. They are all within 1/2” or so of each other.

 

[Smess]

Nittos are true to size, they often dont fit on tire carriers but BF's do

 

[Jeeperjamie]

Nittos are true to size, they often dont fit on tire carriers but BF's do

Nitto's measure 36.4 mounted on a Gladiator with 36 psi of air. That might be as close to 37 you may get other than a Geolander.

If you want a true 37 buy a 38

 

[ER Nurse]

M/T Baja Boss 37/12.5/17. 36" with 35psi.

 

[Teqsand]

My question is, what do I tell my ECU my tire size is with these huge differences?

I measure top down the ground at static pressure as a starting point. I then run about 10 miles up the freeway to warm up the tires, on the return i turn on my GPS speedometer app and see how close, I make +/- adjustments until the jeeps speedometer matches the phone app... seems to work for me at least

 

[WILDHOBO]

Goodyear MTR Kevlar 37x12.5x17 are one of the biggest 37s. They will not fit in the spare tire area - between the frame rails, even with zero air. They claim 36.8 inches and I think that is accurate. I have 4 of them. Here they are compared to the same size Patagonia MTR which I am using as a spare. It will fit between the frame rails.

Those are cool. I didn’t know anyone got as high as 36.8 in a 37x12.5. My MT Baja Boss A/T’s measure 36.5. I can get my spare in inflated, but not by much. Thanks for the post. It makes my decision to not go bigger than I have, since I want 5 matching for rotations.

 

[dcmdon]

I don't really see the point over sweating .6 in. A good tire is a good tire. I'd never get a lesser tire just to pick up a half inch.

 

[dcmdon]

I measure top down the ground at static pressure as a starting point. I then run about 10 miles up the freeway to warm up the tires, on the return i turn on my GPS speedometer app and see how close, I make +/- adjustments until the jeeps speedometer matches the phone app... seems to work for me at least

Thank you. What you measure is just a starting point. Run it against a gps at a steady state and see where you end up.

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