Hi,
I own a 1993 Chevy 2 Door Full-Size or K5 Blazer 4WD. I want to put new rims on it but I am worried about backspacing and offset issues. I am deployed overseas so it is real hard to measure these myself or have my wife do it, can anyone help?
The stock setup right now is running 265/75R16 tires and it is on a 16X6.5 rim. It is a 6 lug with 5.5 bolt pattern.
The wheels I am planning on getting are 16X8, 6 lugs with a 5.5 bolt pattern. 4.5in of back spacing and0mm offset.

Am I going to run into issues here? I am getting these online and I would hate to have to send them back if they are wrong.This is my first time dealing with aftermarket rims. I might put a leveling kit on it too if that helps. Thanks.








http://www.4wheelparts.com/Wheels/Xt...n=PXA7089-6883

 

Are you planning on swapping over those same tires? If so, you should have no problems.

 

Cool. I was just worried the new wheels might rub.

 

I just did some more digging (beyond the one source I was able to find) and you may need to do a slight torsion bar crank on the front to clear those tires. You should not have to do any trimming to make things fit, but the rims will stick out further by an inch or so per side.

Sorry for the confusion. It seems I was stuck thinking of the 91-older truck design and not the newer torsion bar front end design which has back spacing more like a front wheel drive car.

 

So what you are saying is regardless of backspacing or offset if I give the torsion bars a crank i will be ok, i am thinking on getting new keys, well it is basically the leveling kit. would that help? I think these are the same wheels as the stock ones except i am not sure what the stock backspacing and offset is.

 

Standard BS, from what I can tell, is around 6". At 4.5" BS, the tires will stick out 1.5" further than stock. This coupled with a 10.5" wide tire (265mm == 10.43") can cause rub while at the steering extremes. A torsion bar crank can help to alleviate this.

The 265/75R16 tire is 31.65" (ideally) in diameter. The stock tire for your truck is given as a 245/75R16 on Tirerack.com, which is a 9.64" wide tire with an ideal overall diameter of 30.46". So you are increasing the height by 1.2", the width by 0.8" and the BS by ~1.5".

The 265/75R16 plus sizing sounds normal in the Full Size trucks, but with stock back spacing.

As most of the stuff I found says that you should not have much trouble with this setup. And if you do, a slight TB crank should alleviate any rubbing. With the common theme among aftermarket rims having zero offset, I am sure that this is something someone has run into, but given this tire size, I could not locate anything saying they would rub.

 

Now what if I added the leveling kit...which is just 2 new TB keys? will it give the clearance I need?

 

One more thing. How do i know if my truck has hub centric or lug centric wheels? I know the wheels mount onto a portion of the hub that sticks out but the lug nuts also have bevels on the ends that help center the wheel when force is applied. any suggestions?