I have a 2011 Supercrew FX4 at the factory height. I want to get the Fuel Off-Road Boost wheels in 20. I do not intend to level nor lift the truck, I just want a little bigger tire and better looking rim. I know that the 20 x 9 will be a wider rim, so it will change things. The problem is that I do not understand enough about the suspension geometry, nor backspacing and offsets to choose the right ones. So which is closest to the stock setup?, or do I need to find a different rim?

Fuel Boost 20x9.0 Bolt Pattern 6x135mm - 6x5.5 Offset -12
Fuel Boost 20x9.0 Bolt Pattern 6x135mm - 6x5.5 Offset 1
Fuel Boost 20x9.0 Bolt Pattern 6x135mm - 6x5.5 Offset 14
Fuel Boost 20x9.0 Bolt Pattern 6x135mm - 6x5.5 Offset 20

Oh yeah, my limited knowledge and research says that the +20 is closest to stock. How far off am I?

 

edit: art04 is right, go with 20 offset to keep close to stock. stock wheels have 6.2 backspacing, could have sworn 09+ were mid 5 backspacing.

 

The +20 offset are going to be closest to stock, but stock is somewhere around +35 or +40, so they will stick out about 1 inch farther than stock. The lower the offset gets, it is just going to push the tire out more, but then you have to worry about the tires rubbing if you go with a big negative offset.

 

One thread per subject please.

 

Thanks for the replies. After further research, let me see if I understand how this stuff works.

Stock rim is 7.5in (190.5mm) wide with an offset of +44mm. +44 means that the center part of the rim (where the rim bolts to the tire) is 44mm from the center towards the outside. That would mean that the meat of the wheel is 2.02in (51.25mm) from the outside edge and 5.48in (139.25mm) from the inside edge. Right so far?

The Boost wheel is 9in (228.6mm) wide and the proposed offset is +20mm. +20 means that the center part of the rim (where the rim bolts to the tire) is 20mm from the center towards the outside. That would mean that the meat of the wheel is 3.71in (94.3mm) from the outside edge and 5.29in (134.3mm) from the inside edge. Yes?

In other words, the Boost rim will stick out 1.69in (43.05) farther than the stock rim and will actually be 0.19in (4.95mm) shorter on the inside than the stock wheel.

Is all of that right? Will that extra 1.69in on the outside affect it much, or will it mostly be cosmetic?

Note: I do realize that the width of the "meat" is not accounted for in the figures above, but this was a big enough step for me.

 

Comments?

 

I have the fuel hostages on my truck. They are 18x9 with a +20 offset and 5.75" backspace. So they stick out about a inch. I am running
them with 33" Nitto trails with no leveling kit.

 

This is great information! I looked at your album and it looks fantastic. The only difference is that I am looking at 20's instead of 18s.

Do you have ANY rubbing/binding problems at all?

 

Thank you. I didn't have to trim anything and there is no rubbing at all.

 

I have the MHT Fuel Octane 20x9 with -12 offset (4.5" Backspace)

305/55R20 Nitto Trail Grapplers stick out about 1.5" I had some minor rubbing on the lower valance at full turn. Trimmed it back with sawzall

 

I have an 04 FX4 Regular cab Flareside. I just ordered the Bilstein 5100 levelling struts and am looking at new rims/tires. I am planning on either 18" or 20'' rims with 33/12.5 tires. Any suggetions on the max negative offset I can run with little to no rubbing? I am wanting to go with -12 offset but I am thinking that there may be rubbing issues. Anyone running a similar set up with the Bilsteins? I beleive the max front lift with the Bilsteins is 2"??

 

It doesnt matter if the specs of the width of the rim and offset are the same as what you are looking at 17,18,19,22 inch rims......Dont matter as long as the offsets and rim widths are the same you can compare them AND the diameter of the tires stay the same.....which for you will probably be a 33"tire as the above fella is running as well. Also the stock tires you are already running are 32-32.5 inches. so you are only going up a half inch or so in tire size.. You wont have any problems or binding because your geometry is going to be the same. you will notice the heavier 20"wheels though, it feels a little stiffer on the ride

 

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i know this is a VERY old thread, but im in need of similar help. im looking to get some method standards 18x9 with +18 offset 5.75 backspace. im looking to run 35x12.50x18 general grabbers. will this wheel/ tire combo fit if used with a 2.5" level?

 

^^^^ yes it will fit