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Old 03-18-2005, 07:49 AM   #101
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Re: For those that dont understand backspacing and offset

nope the bolt pattern on our trucks is 5 x 120.65mm.
Old 03-28-2005, 08:19 PM   #102
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Re: For those that dont understand backspacing and offset

will a 14mm offset work on a 99sdime 2wd?
Old 03-29-2005, 03:52 AM   #103
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Re: For those that dont understand backspacing and offset

17x9 wheel 7" back spacing any chance i can make this work they are 2000-2002 camaro ss wheels can get a great deal
Old 03-29-2005, 08:18 AM   #104
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Re: For those that dont understand backspacing and offset

Quote: Originally Posted by Chanman
will a 14mm offset work on a 99sdime 2wd?
yes

Quote: Originally Posted by nbaryo1
17x9 wheel 7" back spacing any chance i can make this work they are 2000-2002 camaro ss wheels can get a great deal
yes they will work, but your going to need to use a 2" spacer/adaptor inorder for the wheels to fit on correctly. with that wide of a rim , you would need 5" of backspacing. They have the correct bolt pattern, just wrong backspacing.
Old 03-29-2005, 07:35 PM   #105
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Re: For those that dont understand backspacing and offset

ok i am pretty sure this will fit fine but just to play it safe. ok a 225/45/18 and a 18x8 offset of 12mm and backspace of 5".
Old 03-30-2005, 08:48 AM   #106
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Re: For those that dont understand backspacing and offset

Quote: Originally Posted by slownoma98
ok i am pretty sure this will fit fine but just to play it safe. ok a 225/45/18 and a 18x8 offset of 12mm and backspace of 5".
yes that will fit fine, the tire is a little tall to lay out with bags and inner fenders still intact... but if you only have any kind of drop near a 2/3 or 3/4 you should be fine without rubbing..
Old 04-04-2005, 11:44 AM   #107
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Re: For those that dont understand backspacing and offset

Ok, I have another question:

Will this work?

18x8.5" Up front with a 245/40/18 Tire. 4.75in Backspacing. Offset of 0.
20x8.5" In Rear with a 245/35/20 Tire. 4.75in Backspacing. Offset of 0.

Will that even look right with a 40 series tire up front and a 35 series tire out back? Do you think it ca still be laid out? Im not worried if its like a half inch or an inch from laying out in the front.
Old 04-04-2005, 11:56 AM   #108
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Re: For those that dont understand backspacing and offset

yes that will work fine, and for the tires.. those will also work well. You wont really notice the difference from a 35 to a 40 series much at all. But the truck will not layout in the front just so you know... youll be about 1" off theground most likely.
Old 04-04-2005, 01:06 PM   #109
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Re: For those that dont understand backspacing and offset

Quote: Originally Posted by 98layinframe
yes that will work fine, and for the tires.. those will also work well. You wont really notice the difference from a 35 to a 40 series much at all. But the truck will not layout in the front just so you know... youll be about 1" off theground most likely.
Ok I made a mistake. Forgive me oh great wheel and tire father

Not a big mistake, its just that the front tire is going to be a 235/40/18 instead of a 245/40/18. Is that going to make any sort of difference? Also, do you think these are decent prices for these tires? They are Falken Azenis ST-115 Tires. The 18's are 141.00 per tire and the 20's are 227.00 per tire.
Old 04-04-2005, 01:23 PM   #110
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Re: For those that dont understand backspacing and offset

Quote: Originally Posted by LowOnAirS10
Ok I made a mistake. Forgive me oh great wheel and tire father
Ok well... maybe this once.. after that your banished from here


no its not going to make much of a difference in the size of the tire. Your talking maybe about a 1/2" - 1/4" difference in height at most. I wouldnt go any smaller then that size and still try to get it on that 8.5" wide rim. Unfortunantly i dont know the cheapest places to buy those tires at, the only thing i could say would be to scan ebay and see if you could find them on there. The prices you mentioned there dont seem all that rediculus... your gona pay for a high quality tire unfortunalty
Old 04-04-2005, 02:00 PM   #111
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Re: For those that dont understand backspacing and offset

Thanks for all your help!
Old 04-07-2005, 05:04 PM   #112
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Re: For those that dont understand backspacing and offset

ok i am totally lost on this will these fit and what size tire should i run and i am not real sure how much of a drop i have but i think it is a 3"/4"Eagle Alloys 203 Series Wheels
Wheel, Series 203, 17 in. x 8 in., 5 x 4.5-4.75 in. Bolt Circle, 4.5 in. Backspace, Each
Old 04-08-2005, 08:23 AM   #113
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Re: For those that dont understand backspacing and offset

Quote: Originally Posted by 00LowSonoma
ok i am totally lost on this will these fit and what size tire should i run and i am not real sure how much of a drop i have but i think it is a 3"/4"Eagle Alloys 203 Series Wheels
Wheel, Series 203, 17 in. x 8 in., 5 x 4.5-4.75 in. Bolt Circle, 4.5 in. Backspace, Each

a buddy of mine has those exact same wheels, they fit perfect. For tire size, id probably go with a 225 40 17. You dont want to go getting a massive sized tire incase in the future you want to drop it lower, or bag it. WIth that size tire, you can still do both and not have to get new tires.
Old 04-08-2005, 05:04 PM   #114
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Re: For those that dont understand backspacing and offset

cool thanx i apprciate it
Old 04-08-2005, 06:35 PM   #115
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Re: For those that dont understand backspacing and offset

Here's what I'm looking at: Cragar S/S deep dish for the rears, 15x8's. Now the backspacing is 2.5" because of the deep dish so would they be sticking out like crazy with that kind of backspacing and dish or would they be fine because the dish makes up for the lack of backspacing? Another way to word it would be is the larger the backspacing the more the rim sticks out or vice versa?

Anyone know if they do indeed fit s-10 because this is what summit's site says "This is a reverse style wheel, there may be interference problems with most disc brakes, some large drum brakes and most fenderwells.". I'll have a 2/1 drop btw which shouldn't interfere with anything.

Last edited by 10aciousD : 04-08-2005 at 06:42 PM.
Old 04-08-2005, 08:27 PM   #116
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Re: For those that dont understand backspacing and offset

they willl stick out pretty far. and the less the backspacing, the greater the dish will be.. so you said they have a 2.5" backspace, so basicly to see where they will sit on th truck, with a tape measure.... measure from the front of the drum out 5 1/2" out towards the fender opening. that is how far the wheel will stick out.
Old 04-10-2005, 05:56 PM   #117
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Lightbulb Re: For those that dont understand backspacing and offset

Found this chart, is it accurate?


And can you decide if the wheel will fit based soley on backspacing and bolt pattern, or offset and boltpattern? For instance comparing a 17x8 5x120 with a 0offset, or a 17x8 5x120 with a 4.5'' backspacing. Technically, the 0offset and the 4.5'' backspacing will place the wheel mounting surface at the same point compared to the rim centerline.. correct?
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Old 04-13-2005, 08:19 PM   #118
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Re: For those that dont understand backspacing and offset

okay, so if you wanted a 18x8 wheel, with the same offset and bs as a stock wheel (im pretty sure the xtreme wheels are 8" wide) so youd know 100% itd tuck right and not rub, whaddaya get,exactly?
Old 04-14-2005, 11:27 AM   #119
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Re: For those that dont understand backspacing and offset

Quote: Originally Posted by TheTeeRav
Found this chart, is it accurate?


And can you decide if the wheel will fit based soley on backspacing and bolt pattern, or offset and boltpattern? For instance comparing a 17x8 5x120 with a 0offset, or a 17x8 5x120 with a 4.5'' backspacing. Technically, the 0offset and the 4.5'' backspacing will place the wheel mounting surface at the same point compared to the rim centerline.. correct?

yes that chart looks to be acturate. The optimum offset for our trucks is a 0mm offset for a 8" rim just as the chart sayes.
Old 04-15-2005, 03:04 AM   #120
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Re: For those that dont understand backspacing and offset

I've got a blazer zr2(no lift), and was wondering if 15X8's w/4.5 backspacing would work on stock tires? I am willing to trim and remove flarettes if necessary, and someday will hopefully get a lift when I can afford it.

And what about 15X8's w/3.75 backspacing.......I know they wouldn't fit on a stock ZR2, but what about with trimming and a 2in lift?

...........OK, my bad, I just saw the chart posted, and it kinda answered my question about the 4.5backspaced wheels.....if the optimum offset is indeed 0mm.
But I still wonder about the 3.75in backspaced wheels, because I think the farther out they stick the better it looks?
Any recommendations?

Last edited by rumbleB : 04-15-2005 at 03:12 AM.
Old 04-15-2005, 10:19 AM   #121
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Re: For those that dont understand backspacing and offset

Quote: Originally Posted by rumbleB
I've got a blazer zr2(no lift), and was wondering if 15X8's w/4.5 backspacing would work on stock tires? I am willing to trim and remove flarettes if necessary, and someday will hopefully get a lift when I can afford it.

And what about 15X8's w/3.75 backspacing.......I know they wouldn't fit on a stock ZR2, but what about with trimming and a 2in lift?

...........OK, my bad, I just saw the chart posted, and it kinda answered my question about the 4.5backspaced wheels.....if the optimum offset is indeed 0mm.
But I still wonder about the 3.75in backspaced wheels, because I think the farther out they stick the better it looks?
Any recommendations?

A wheel with 3.75" backspacing is gona stick out really far on a zr2 man. The measurements above are for a 2 wheel drive truck. THe 2x4's have a different offset and backspacing then the 4x4's and zr2's. You will deffiently rub with that wheel. You need a rim that had more along the line of 6" of backspacing to fit your truck like a factory wheel. If you want the wheels to stick out a little farther then the factory wheels, you should be looking for a rim with a 5" - 5.5" backspace on it. That will make the wheel stick out 1" farther then a factory wheel would.... and also you probably wouldnt have to trim hardly any of the fender moldings. If the wheel manufacture usues an offset mearsurement to determine the fittment... then your gona wana look for a wheel with an offset of around 15mm - 20mm of offset. Again this will make your tracking width about 1" wider on each side.
Old 04-19-2005, 12:24 PM   #122
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Re: For those that dont understand backspacing and offset

i need to get my rims on my truck and im having a tough time finding cheap spacers. I picked up a set of 18 x 7.5 fwd offset wheels with 215-40-18 tires off a camaro (same bolt pattern). the backspacing is about 6 inches, the optimimum spacer would be 1.75" right!?
now would i be ok with 1.5" spacers all the way around? or will it rub anything on my bagged 97 s10. cause there is a huge price difference between 1.5", and 1.75 or 1.8" spacers!
sorry for the novel but i NEED help!!!!!!!

thanks
Old 04-19-2005, 12:27 PM   #123
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Re: For those that dont understand backspacing and offset

yeah youd be fine with the 1.5" ones.. 1/4" is not gona kill ya.
Old 04-19-2005, 01:01 PM   #124
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Re: For those that dont understand backspacing and offset

SWEET!!!!!!!! :O)
thanks for the quick response, ill be ordering them today!!!!!
Old 04-19-2005, 10:50 PM   #125
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Re: For those that dont understand backspacing and offset

where you getting them?
Old 04-21-2005, 10:33 AM   #126
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Re: For those that dont understand backspacing and offset

what is the correct back spacing for 20s? and 22s also?


i'm not that bright when it comes to this stuff....

wanna be able to tuck....either 20s or 22s up front.....
Old 04-22-2005, 11:21 AM   #127
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Re: For those that dont understand backspacing and offset

nigglewiggle: i got my spacers on ebay. the guys seller name is gotdubs20 and he custom makes them however you want! lifetime warrantee, million dollar liability and they were $165 shipped for a set of 4!
Old 04-25-2005, 03:14 PM   #128
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Re: For those that dont understand backspacing and offset

Alright, I have a '93 S10 blazer and am looking to get some 15x7 after market wheels. I have two questions:
Is the bolt pattern on my truck 5x4.75?
And what is the back spacing of my stock wheels, what back spacing should I get?
I ask because I had some chrome American Racing wheels on my last Blazer (an '88) they stuck out too far to pass inspection. I don't know the back spacing on those wheels either. Thanx
Old 04-25-2005, 03:17 PM   #129
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Re: For those that dont understand backspacing and offset

i forgot to add that my blazer is a 4x4, 4.3 and a 4 door if that matters
Old 04-25-2005, 03:34 PM   #130
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Re: For those that dont understand backspacing and offset

well since your blazer is a 4x4, your gona need to run a wheel with an offset of about +35 - +40mm.

I see your from pittsburgh man.. what area? Im from monroeville..
Old 04-25-2005, 04:14 PM   #131
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Re: For those that dont understand backspacing and offset