Wheel Offset
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Postmaster
Joined: Apr 2004
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From: Santa Clarita
Wheel Offset
I've finally decided to purchase some new rims for the truck after everyone and their mother has told me to get new wheels. I'm set on the Torque Thrust II's I really like em. I'm thinking about going with 17X7 on the front and 17x9.5 in the rear. I need to figure out what my offset will be. Anyone know how to do that? I'd like to have all fours tuck in the fenders as close as possible. If anyone knows what their offset, tire combo is with the same wheels, I'd appreciate it.
Senior User
Joined: Oct 2004
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From: Michigan
That bad, huh?...even their mother told you to get new wheels
!
It all comes down to getting under there and measuring. It's a little easier if you have a bare rim. Just mount it on and measure the clearances with that rim...be sure to get the full turning in front. Take that info with the existing rim offset info to your supplier and they'll tell you what your options are and what to get.
Norb
! It all comes down to getting under there and measuring. It's a little easier if you have a bare rim. Just mount it on and measure the clearances with that rim...be sure to get the full turning in front. Take that info with the existing rim offset info to your supplier and they'll tell you what your options are and what to get.
Norb
Logistics Pro
Joined: Oct 2002
Posts: 4,489
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From: Valley Center, CA
Norb's right, it takes careful measuring. You may be able to find a wheel/tire store that will actually measure it for you! I took mine to Les Swab and they trial mounted tires for me until we had the right size. If you were going for new wheels also, I don't see why they wouldn't figure the size out for you. John
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Postmaster
Joined: Apr 2004
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From: Santa Clarita
I don't believe the rear fenders are stock, they look wider than normal ones. Maybe I'll go with the 17x8 instead, just to make sure. I love that deep look of the 9.5's though.
Fleet Mechanic
Joined: Jun 2004
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From: Minnesota
Do you have disk brakes on the truck? If you do contact the wheel manufacturer and find out about the maximum backset you can have. With the disk brakes on my smoothie wheels I could only go 4.5" maximum on a normal wheel or 3.5" maximum on a reversed wheel. That is to clear the calipers for disk brakes. The back wheels in my gallery are reversed with a 2.5" backset. Also do not forget your tires will stick out past the edge of the rims so that will take up more room. I used www.tirerack.com to get a look at tires and what will fit what wheel size. With a 10" wide wheel you are pretty limited on tire sizes. I can tell you from experience.
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Postmaster
Joined: Apr 2004
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From: Santa Clarita
Originally Posted by Christopher2
Do you have disk brakes on the truck? If you do contact the wheel manufacturer and find out about the maximum backset you can have. With the disk brakes on my smoothie wheels I could only go 4.5" maximum on a normal wheel or 3.5" maximum on a reversed wheel. That is to clear the calipers for disk brakes. The back wheels in my gallery are reversed with a 2.5" backset. Also do not forget your tires will stick out past the edge of the rims so that will take up more room. I used www.tirerack.com to get a look at tires and what will fit what wheel size. With a 10" wide wheel you are pretty limited on tire sizes. I can tell you from experience.
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Postmaster
Joined: Jun 2004
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From: Riverside, So Cal
Lower - My 56 came with 15 X 8.5 rear rims with a 3.25 backspace. The (10.5 wide) P275/50R15 tires fit just inside the lip of the stock rear fender. I spaced the fender out 2.0 and changed to (12.0 wide) P295/50R15 and have 1.0 clearance between the inside of the tire and the bed wall with the tire just under the fender lip.
I am running 15 X 6 front rims with a 3.0 backspace and P235/60R15. No problems.
I don't think the 9.5 deep rims (3.75 backspace) will work in the rear without wider fenders.
I don't personally like the idea of tubbing the bed because I haul stuff in mine, but if you went that way, almost anything can be made to fit.
I am running 15 X 6 front rims with a 3.0 backspace and P235/60R15. No problems.
I don't think the 9.5 deep rims (3.75 backspace) will work in the rear without wider fenders.
I don't personally like the idea of tubbing the bed because I haul stuff in mine, but if you went that way, almost anything can be made to fit.
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Joined: Mar 2003
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From: South Central MN
this is really a good question, considering it is one that i would have probably asked in a couple more months (hopefully)....i would also have to agree with the nice choice on the rims...i was looking at those also, but now one more person has them, so i might go with something different...maybe not....they still are sharp tho
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Postmaster
Joined: Apr 2004
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From: Santa Clarita
I just found out that the rear fenders on my truck are 3" wider than the stock fenders. The rear fenders were replaced. I may be able to run the 9.5" rims in the rear. Thanks for all the great advice. It's helping me get the right rim setup. I'm still with the Torque Thrust II style, however most of friends are leaning towards the Hopster style wheels (those are the ones fatfenders thinks look like biker symbols. LOL...
Post Fiend
Joined: Feb 2001
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From: Iowa
"those are the ones fatfenders thinks look like biker symbols. LOL..."
Niolon's buying the matching steering wheel. You guys just get all tattooed up and go for it.
Don't worry about me, I usually run at least half a decade behind on fashion trends anyway. I'll get some new rims someday. But I think I'll always keep the smoothies around so I can run them now and then.
If you have 3" widened fenders you should be in good shape. Measure carefully.
Niolon's buying the matching steering wheel. You guys just get all tattooed up and go for it.
Don't worry about me, I usually run at least half a decade behind on fashion trends anyway. I'll get some new rims someday. But I think I'll always keep the smoothies around so I can run them now and then.If you have 3" widened fenders you should be in good shape. Measure carefully.
Lead Driver
Joined: Apr 2002
Posts: 8,813
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From: Littleton, New Hampshire
Originally Posted by imlowr2
Christopher, I checked out tirerack.com already. I'm running stock drum brakes on the truck right now. Good point though, because I am planning on installing the disc brake conversion on the front and staying with the 5.5 lug pattern like the back. Wonder if that will change the offset any installing disc brakes on the front. I'm leaving the drum in the rear. They're good enough. You got me wondering if I should do the disc conversion first. I like the way my rims fit now, with the exception of the front. They have 15x8's which are a little too wide. The back is pretty good. I think the 17's will give it a better look than the 15's on it.
Not only is it possible but likely that a disc brake conversion will change the offset in the front. I'd consider doing the disc brake conversion first. I seem to remember the last disc brake conversion I did positioned the rotors about one inch further to the outside on each side than the drums they replaced.
Vern
Junior User
Joined: Sep 2003
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From: TX
Here is some good information on how to measure what size wheel would fit.
http://www.rsracing.com/tech-wheel.html
http://www.rsracing.com/tech-wheel.html
Mountain Pass
Joined: Jan 2003
Posts: 226
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From: N. Vancouver B.C.
Lower, not sure if this helps you for a measurement for the front or not but I just did the ECI front disc swap on my 56. I measured from hub face to hub face and got 63". Not sure what the stock distance is but this gives you a number to compare. Just thinking now that I could also measure from hub face to edge of frame if you want??
Also, my rotors are from a Volare/Aspen/Diplomat etc. as I wanted the car bolt pattern. Not sure if a rotor with the 5"x5" pattern would differ much from mine.
Anyway, hope this helps you get the right wheels before the swap to discs.
Kevin
Also, my rotors are from a Volare/Aspen/Diplomat etc. as I wanted the car bolt pattern. Not sure if a rotor with the 5"x5" pattern would differ much from mine.
Anyway, hope this helps you get the right wheels before the swap to discs.
Kevin
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Postmaster
Joined: Apr 2004
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From: Santa Clarita
Kecky - thanks for the info. To find the offset, they measure from the edge of the disc to the inner fender and also a measurement from the disc to the edge of the outer fender, then with some math formula they come up with an offset that would work.
Did you see any change in the rims offset after installing the disc kit? Also do you like the disc conversion and was it easy to install? Thanks.
Ed
Did you see any change in the rims offset after installing the disc kit? Also do you like the disc conversion and was it easy to install? Thanks.
Ed