For Those Who've Run Toyo MT 37x13.5r17...

oxfordraptor said:

If you really want 37's go with BFG KM2 or KR2. They're more like a 36.4 and fit no problem. You'll want gears though. 35" Toyo MT is only 1" smaller than most 37's. Plus on our Reno to Vegas run which I also pre-ran not one flat. Over 1000 miles off road total. 6 flats on the run all BFG.

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Curious, why gears for those? They are lighter than my Toyo 35's (based on what I read anyway). Interesting that the 37x12.5 Toyos are the same weight as my 35's. Must be the lesser ply count or something. Anyway, is it more than just inertial weight that causes a need for different gear ratios?

Geo_Tactical said:

Curious, why gears for those? They are lighter than my Toyo 35's (based on what I read anyway). Interesting that the 37x12.5 Toyos are the same weight as my 35's. Must be the lesser ply count or something. Anyway, is it more than just inertial weight that causes a need for different gear ratios?

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You'll lose off the line torque/momentum due to size. It's really another 2K installed or less for 4.56

Remember trophy trucks run 37/39 with 800 plus hp. A Raptor needs some work to do it right. It can be done but cutting corners if you are a serious off reader will hold you back.

Thanks @oxfordraptor
Yea I finished it all up anyone have questions I have pics and details of what I did to get it to work.


As for the performance side, I've had the truck in glamis hitting full bump and droop, full steering range with zero rubbing, even at steering lock and full compression no contact.


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Luke13 said:

Thanks @oxfordraptor
Yea I finished it all up anyone have questions I have pics and details of what I did to get it to work.


As for the performance side, I've had the truck in glamis hitting full bump and droop, full steering range with zero rubbing, even at steering lock and full compression no contact.


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So what exactly did you do?

Lots of trimming fat off the firewall area of the truck let me dig up the pictures


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---------- Post added at 12:47 PM ---------- Previous post was at 12:42 PM ----------

I don't hit whoops at 75, I stay comfortable and happy around 60/65


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http://www.fordraptorforum.com/f24/4-56-gears-11187/index9.html @Geo_Tactical talk to @m3dragon about gears. He has good input for before and after. He's local and @cups can you tell you the difference also he doesn't have gears and drove m3dragons truck on our pre-run with the 4.56.
@Luke13 I would appreciate pics also since I still plan on the 37" Toyo's just want to wait until summer when I can do gears at the same time. You went Glassworks also yeah?

I'll get pics up soon. Glassworks yes.
I don't think you need gears btw truck runs great, better then factory.


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To update this...I spoke with SVC and Jarrett said that Jeff has been running this tire for a year without issue. Minor trimming on the Glassworks for full clearance plus the usual pinch weld smash. Going to give it a shot. If for some reason they aren't doing it for me, I'll swap over to the RT in the same size. I'll throw up a pic or two once installed.

I'm telling you right now there is no way that is true, I don't care how much you hammer that pinch weld the tire doesn't fit good enough hit a speed bump.


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Update: The truck has been at the body shop for a few days. Clearance at full compression has finally been achieved. It required cutting a few inches off the backside of the fiberlass fenders, as well as cutting into the firewall area. They are off to paint now so I should be able to post some pics early next week.