I have a 2006 Ford FX4 and Im about to purchase a set of 33x12.50x20 toyo mts on a set of 20x10 XD Rockstar rims.....the only problem is i dont know anything about offsets and backspacing or whatever! I have a 2.5" leveling kit on the truck now. I would like for the tires to stick out a little further then the stock ones. Can anyone tell me what offset or backspacing i need or whats recommended? Thanks alot!

 

Backspace and offset are two ways of describing where the wheel sits in relationship to the hub. As such, there is a relationship between the two making - it possible to convert from one to the other. Backspacing is the easiest to understand. It is simply the distance from the back of the mounting pad to the back lip of the wheel. It is measured by laying the wheel on its face, placing a straight edge across the wheel, and then measuring down to mounting face. The higher this measurement the more the wheel is pushed inboard towards the car’s centreline, as shown in the illustration above. Offset is the distance from the mounting surface to the centreline of the wheel, expressed in millimetres. Positive offset means that the wheels are pushed inboard towards the centreline of the car like a car with front wheel drive. Negative means that the wheels are moved outboard towards the fenders, widening the track.

 

This site is well recommended for rims. You might want to take a look.
WheelsAnything.com - Aftermarket & OEM Wheels Tires and Rims

 

I also fond of these type of changes in my cars but it will be great if it was fitted by an expert in a very perfect way. I have been regular customer of Quail Roost Tire Center and it provides expert services that will makes your car running smooth as ever. It has done a good work on my auto repair needs. It offers wide range of auto repair services including engine service, oil changes, breaks, shocks, alignment, suspension, ac service and other repair services that your car may need so, I recommends you to must visit Quail Roost Tire Center.

 

Here is a link to a sweet onling gallery of trucks with all kinds of different wheel and tire combos. Check it out and get an idea of what offset you wanna go with man! https://www.customwheeloffset.com/wh...e_height_to=33

 

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