For those that dont understand backspacing and offset

[TrYiN2LaYaDiMe]

i wanna run a 18x8 rim on my bagged first gen 4 door blazer what offset and backspacing do i need to tuck the wheel up in the fender.

[bmxbang]

i have an 01 blazer 2wd im getting some 20s for it will have a 5/6 drop on it the wheels i want are 5x120.65 with a 15mm backspacing on them i need to make sure the backspacing is correct so i dont hit my fender and make sure that the 5x120.65 will fit without adapters

[DiMeBaGGiN]

ok guys so tomorrow im goin to loook at some 18x9 wheels with a 18mm offset, will those work on my s10 without rubbin when i slam it? im terrible with this shit so i will trust you guys, thanks alot

[swamp_rat]

ok, i finally settled on what wheels im getting, they're bmw 18x8" with 20mm offset (5.3"BS), which to calculations is 0.8" off from 0mm am i correct? but as we know most of the bmw wheels needs to get bored for the 82-97 front bearings..since its 0.8" off, would a 1" adapter save me from having to bore out and still be within the fender and be able to tuck if i bag in the future?

[98layinframe]

Quote: Originally Posted by swamp_rat

ok, i finally settled on what wheels im getting, they're bmw 18x8" with 20mm offset (5.3"BS), which to calculations is 0.8" off from 0mm am i correct? but as we know most of the bmw wheels needs to get bored for the 82-97 front bearings..since its 0.8" off, would a 1" adapter save me from having to bore out and still be within the fender and be able to tuck if i bag in the future?

yeah youd be fine with the 1" thick adaptor.

[swamp_rat]

ok, thanks alot man

[rbryant4]

Quote: Originally Posted by rbryant4

im lookin at a set of wheels by rvm. and it dont say a hole lot about back spacing/rwd or fwd or anything. so, which one will fit or will either one fit?

18x7.5
+38mm offset
+20mm offset

im confused greatly

bump

[Slammed03]

ok...i've tried everywhere else and got nothin..98layinframe can you please help me out??? i am about to buy some 20x8.5 boss 304's and i have a bagged stepside...what backspacing and offset should i get to make sure i wont be touching the humps on the bed when layed out...please help..thanks

[chrisso2169]

Quote: Originally Posted by the buddman

5 x 4.75

also known as 120.65mm

[Xtreme03115]

Im totally lost on this topic...

Can someone please help me.. I didnt even think of this before...

I have an 03 Blazer X.. I am about to do a 2/3 drop and I am going to have my 20's on soon.. they are 20 x 9.0

Do I need an offset if so what size??

Im totally clueless lol

[96 Dime]

I'm looking to buy some rims for my 4x4 Jimmy.

I want to make sure I buy the correct rims with the right offset and I know very little about 4x4 so hopefully someone can help me.

I want to get these;
Cragar Black Soft 8 Wheels: CRR-3977834P - summitracing.com

Is that the correct offset, or what offset would I need? I am going to do a bodylift so I want the tires to stick out a bit.

Thanks,
- Eddie

[Bolster633]

i have a 97 2wd S-10. I am buying 20" motto MT900 rims. They are 8.5" with a 18mm offset. Will these fit on my truck? I have a 2/3 drop. and i'm using 255/35/20 tires.

[CriminalTactic]

im confused also, i want to get some rims that are 18"x7.5" with an offset of +13mm, i ahve no idea how to figure out the backspacing?

[Bolster633]

yeah haha i found out the hard way. Mine didn't fit i had to buy some 1 1/2" wheelspacers. But those 18's should fit, mine were 8.5" and they hit on the swaybar when i turned the tires all the way. 18's should fit with no problems tho. especially because ur wheels are only 7.5" wide, and 18's it should bolt right up.

[98layinframe]

Sorry guys i dont check this thread very often, so its usually just easier to send me a pm with your questions. I usually get back to those quicker.

[98layinframe]

ok i'll try and answer all the questions since my last post awhile ago. but i'll just answer the last ones while im here.

rbryant4 - well since the wheel is only 7 1/2" wide the 20mm wheels you mentioned will work as long as your sure they have the correct bolt pattern or 4.75" x 5 or in metric 120.65mm x 5. ONLY problem is in my personal opinion there not going to look all that great on the truck since there going to be sucked back into the wheel wells so far due to the skinny rim and the 20mm offset factor. If ya want them to stick out further and look like they fill the wheel wells up more you could buy a set of adaptors that space them out 1" further. If you chose the other set of wheels with the +38mm offset, there again you would need a mimum of a 1 1/2" thick adaptor to space them out far enough.

Slammed03 - as long as you order the ones with the... 14mm offset you will be fine. Thats the only offset they sell that will bolt up to a 2wd s10 without spacers or adaptors.

Xtreme03115 - you want as close to 4 3/4" backspacing as possible. Or if its listed in offset, as close to 0mm as possible.

96 Dime - well since you said you want the wheels to stick out further then stock, yes those are perfect for ya. Those will stick out approx 1 1/2" further on each side then the stock ones do. Factory wheels are around 6 1/2" backspacing depending on year and style.

Bolster633 - yes they will work fine. Just watch when ya turn the wheels sharp, the tires are going to rub the frame a little.

CriminalTactic - dont quote me, but right off the top of my head i think that would still be around 4 3/8"

[TrYiN2LaYaDiMe]

is backspacing and offset the same thing??????????????????????????????????????

[TrYiN2LaYaDiMe]

Quote: Originally Posted by TrYiN2LaYaDiMe

i wanna run a 18x8 rim on my bagged first gen 4 door blazer what offset and backspacing do i need to tuck the wheel up in the fender.

i need this answered too. i need backspacing #'s and offset #'s

[98layinframe]

no, but most people just list it as if it were.

[TrYiN2LaYaDiMe]

Quote: Originally Posted by TrYiN2LaYaDiMe

i wanna run a 18x8 rim on my bagged first gen 4 door blazer what offset and backspacing do i need to tuck the wheel up in the fender.

ok and can u help me with this one

[98layinframe]

Quote: Originally Posted by TrYiN2LaYaDiMe

i need this answered too. i need backspacing #'s and offset #'s

you need 4 1/2" to tuck just fine, but since its a first gen id go with a slighty bit more backspacing and try to get a wheel with 4 3/4" if at all possible, and im only saying this to help a slight bit with turning when crushed and tucking rim up in the fenders.

edit... nevermind i was thinking you were bodydropped.. If your just bagged the 4 1/2" will work just fine.

[TrYiN2LaYaDiMe]

ok what bout the mm size. like 18mm offset or what? ill do a 4.5 backspacing but what would a offset be??????

[98layinframe]

4.5" backspacing on a 8" wide rim is considered a 0mm offset.

[TrYiN2LaYaDiMe]

ok thanks for the info...... but reading this it said i need a plus 12mm offset is this true

[s1093boy]

hey wat up guys?

hey 98layinframe could you help me on this one man...i have a 93 S10 ext cab with the thorbecke brothers S-10 5- link super lift system and the thorbecke front control arms and im ready to put 20's on front and 22's on the back what would you recommend me to get for the front without rubbing anything..also for the back. thank you

[rezalb]

OKay I've seen a couple people ask about 3.75 backspacing, but I just wanna say I have a 2" body, t bar crank, and shackles and looking to put 31x10.5 mud terrains on a rim 15x8 with 3.75 backspacing. Am I gonna rub? I want the tires to stick out a litle past the body, I'm in Canada and laws arnt too important, Will this setup look sick or what?

[TmacS10]

I been reading this post and I am thinking about buying some 20's for my truck. The dealer says the best tire and wheel combo for it is 255/35R20. The wheels are some lexani's 20x8.5 but does tell backspacing or offset. Is it are certain ofset to ask for or the dealer will send the best fit for the truck. I really want no rubbing of the tires. It is not lower at all but future plans are to lower it 2/3 inches. Help me out because I don't want it to be messed up.

[RANDOMIZM]

I own a 2001 2dr 2wd Blazer which is dropped about 5/5. I am looking to purchase 17x8.5 wheels for the front, and 18x9.5 for the rear, what offset/backspacing would I need for these to fit up in the wheel wells? Or will these sizes even work?


Has anyone had any Success puting a Corvette Z06 style wheel onto their S10? IF so, what kind of mods were necessary, and what size spacer is needed?

[s10sixteynine]

can someone help im looking at some newer vette wheels with an offset of 56 in front and 70 something in the back that is what he said i dont know im bagged and in the proccess of a bd they are 18x8.5 and 19x10 if anyone can help let me know i dont mind spacers but i need to know if i can make these work

[98layinframe]

Quote: Originally Posted by TrYiN2LaYaDiMe

ok thanks for the info...... but reading this it said i need a plus 12mm offset is this true

no you dont need a 12mm offset.. but anything thats between a 0mm thru a +15mm offset will work fine on the truck.

S1093boy - believe i allready talked to you in emails. but if you have more quesitons let me know.

Quote: Originally Posted by rezalb

OKay I've seen a couple people ask about 3.75 backspacing, but I just wanna say I have a 2" body, t bar crank, and shackles and looking to put 31x10.5 mud terrains on a rim 15x8 with 3.75 backspacing. Am I gonna rub? I want the tires to stick out a litle past the body, I'm in Canada and laws arnt too important, Will this setup look sick or what?

yes a 3.75" backspacing wheel will work just fine and push the wheels out about 2" on each side. The only problem i see is with not so much lift and the size tire you want to run.. your probably gona have some rubbing on the fenders when ya turn hard and the suspension compresses at all. You can allways trim the fenders a little to clear better if needed.

Quote: Originally Posted by TmacS10

I been reading this post and I am thinking about buying some 20's for my truck. The dealer says the best tire and wheel combo for it is 255/35R20. The wheels are some lexani's 20x8.5 but does tell backspacing or offset. Is it are certain ofset to ask for or the dealer will send the best fit for the truck. I really want no rubbing of the tires. It is not lower at all but future plans are to lower it 2/3 inches. Help me out because I don't want it to be messed up.

yes either a 245 35 20 or a 255 35 20 will work best for the truck and rim size you mentioned. As for the offset, you will need a wheel with anywhere inbetween a 0mm offset thru a +15mm offset. I know alot of lexani wheels have a +35mm offset to them... these will NOT work unless you want to run a set of adaptors with will add another 300 bucks to your wheel price approx.

Quote: Originally Posted by RANDOMIZM

I own a 2001 2dr 2wd Blazer which is dropped about 5/5. I am looking to purchase 17x8.5 wheels for the front, and 18x9.5 for the rear, what offset/backspacing would I need for these to fit up in the wheel wells? Or will these sizes even work?

Has anyone had any Success puting a Corvette Z06 style wheel onto their S10? IF so, what kind of mods were necessary, and what size spacer is needed?

yes alot of people on here run corrvette wheels. and as for the spacers, the norm for Z06 wheels is you need a 2 1/2" thick adaptor at all for corners, do ya have any specific specs on your wheels?

Quote: Originally Posted by s10sixteynine

can someone help im looking at some newer vette wheels with an offset of 56 in front and 70 something in the back that is what he said i dont know im bagged and in the proccess of a bd they are 18x8.5 and 19x10 if anyone can help let me know i dont mind spacers but i need to know if i can make these work

well for the front wheels, you will need a 2 1/2" thick adaptor. The rear is the difficult part.. with the newer C6 wheels with the 70+ offsets to them they require a huge 3 1/4" thick adaptor on them in order to fit out trucks. Now the main problem is as far as i know, noone makes a 3 1/4" thick adaptor. (maybe they would custom make one ) So my best suggestion to ya is to find a 98+ 4x4 blazer rearend... the 4x4's are 2" wider on each side, plus the blazers have disk brakes on them from the factory. The nice thing about using the wider rearend is now you only have to run a 1 1/4" thick adaptor in order to space the wheels out far enough.