will 20" x 8.5 fit in the rear? Options

[madmods]

will 20" x 8.5 fit in the rear? This is just for the rear end. Is it too wide to tuck under my fenders like my tires do now? Does anybody have 20's
18s for the front.

[Kwanza26]

No...

[Mr_E]

Dear god no.

I imagine with enough work you could make them fit, but the car would handle like an utter pile of crap.

[boosted_K2]

you will need to have the fenders rolled and a nice hefty offset.

[celica3sgte]

I've got 19's front and back. No problems. It does rub a little when I take a turn real hard. I want to say that I got a 42 mm offset.

[Andason]

i have 18s with no problems i think 19s in the back and 18s in the front... maybe?

This post has been edited by Andason: Mar 5, 2005 - 10:09 PM

[Kwanza26]

It's not the height that is the MAJOR problem, although it does pose a problem. It's the width. 8.5 is too wide even with 42-48mm offset... and that's assuming you can find 8.5 inch wide wheels with high FWD offsets... cause typically speaking, 8.5 in wide wheels are mostly RWD offsets...

This post has been edited by Kwanza26: Mar 5, 2005 - 10:25 PM

[jgreening]

It's not the height that is the MAJOR problem, although it does pose a problem.  It's the width.  8.5 is too wide even with 42-48mm offset... and that's assuming you can find 8.5 inch wide wheels with high FWD offsets... cause typically speaking, 8.5 in wide wheels are mostly RWD offsets...
[right][snapback]253684[/snapback][/right]

Actually, you would need a wheel with LOWER offsets. You may need to roll the fenders but strut clearance will definitely be an issue. For 8.5" wheels, I would look for an offset no more than 30 (unless you have wheel spacers then the number can go up proportionately with the size of the spacer). Why not go with 8" wheels? Thats plenty wide enough on a 6gc.

This post has been edited by jgreening: Mar 6, 2005 - 2:01 PM

[Kwanza26]

Actually, you would need a wheel with LOWER offsets.  You may need to roll the fenders but strut clearance will definitely be an issue.  For 8.5" wheels, I would look for an offset no more than 30 (unless you have wheel spacers then the number can go up proportionately with the size of the spacer).  Why not go with 8" wheels?  Thats plenty wide enough on a 6gc.
[right][snapback]253847[/snapback][/right]

The problem as I stated... most 8.5 inch wide wheels are NOT FWD offset, they are RWD... which is not gonna fit. Judging from the depth of the wheel well, chances of even finding an offset that can clear the fender, let alone tuck under, will be a harsh challenge. Also, when performance is concerned... FWD cars don't need extra rear grip... That'll just induce mad understeer...

[jgreening]

Actually, you would need a wheel with LOWER offsets.  You may need to roll the fenders but strut clearance will definitely be an issue.  For 8.5" wheels, I would look for an offset no more than 30 (unless you have wheel spacers then the number can go up proportionately with the size of the spacer).  Why not go with 8" wheels?  Thats plenty wide enough on a 6gc.
[right][snapback]253847[/snapback][/right]

The problem as I stated... most 8.5 inch wide wheels are NOT FWD offset, they are RWD... which is not gonna fit. Judging from the depth of the wheel well, chances of even finding an offset that can clear the fender, let alone tuck under, will be a harsh challenge. Also, when performance is concerned... FWD cars don't need extra rear grip... That'll just induce mad understeer...
[right][snapback]254058[/snapback][/right]

This is probably off topic but it could be an educational discussion. WTF is the difference between FWD offset and RWD offset? Offset is offset. Its the distance in millimeters from the center of the rim (when looking down on the rim as it sits on a car) and the lug mounting surface. If you are comparing offsets of two wheels with posititive numbers, the wheel with the higher number will have a mounting surface that is pushed out further toward the exterior of the car making the wheel "suck in". The reason you need a lower offset when you buy wider rims is that if you keep the offset the same, the extra width of the wheel takes up equal extra space on the strut side of the well and on the exterior side of the well. Now, you can get away with a little less clearance on the strut side but there is no way you will be able to get away with a 40+ offset on 8.5" wide wheels without spacers.

This post has been edited by jgreening: Mar 7, 2005 - 12:20 AM

[madmods]

Actually, you would need a wheel with LOWER offsets.  You may need to roll the fenders but strut clearance will definitely be an issue.  For 8.5" wheels, I would look for an offset no more than 30 (unless you have wheel spacers then the number can go up proportionately with the size of the spacer).  Why not go with 8" wheels?  Thats plenty wide enough on a 6gc.
[right][snapback]253847[/snapback][/right]

The problem as I stated... most 8.5 inch wide wheels are NOT FWD offset, they are RWD... which is not gonna fit. Judging from the depth of the wheel well, chances of even finding an offset that can clear the fender, let alone tuck under, will be a harsh challenge. Also, when performance is concerned... FWD cars don't need extra rear grip... That'll just induce mad understeer...
[right][snapback]254058[/snapback][/right]

This is probably off topic but it could be an educational discussion. WTF is the difference between FWD offset and RWD offset? Offset is offset. Its the distance in millimeters from the center of the rim (when looking down on the rim as it sits on a car) and the lug mounting surface. If you are comparing offsets of two wheels with posititive numbers, the wheel with the higher number will have a mounting surface that is pushed out further toward the exterior of the car making the wheel "suck in". The reason you need a lower offset when you buy wider rims is that if you keep the offset the same, the extra width of the wheel takes up equal extra space on the strut side of the well and on the exterior side of the well. Now, you can get away with a little less clearance on the strut side but there is no way you will be able to get away with a 40+ offset on 8.5" wide wheels without spacers.
[right][snapback]254065[/snapback][/right]

I have wondered that too, but some car sites state fwd and rwd on their rims so its got to mean something.
I wanted to do 18s front and 19s back, but they only make rims in 18 x7.5 and 20 x 8.5 These are the wheels I wantclick here

[jgreening]

Actually, you would need a wheel with LOWER offsets.  You may need to roll the fenders but strut clearance will definitely be an issue.  For 8.5" wheels, I would look for an offset no more than 30 (unless you have wheel spacers then the number can go up proportionately with the size of the spacer).  Why not go with 8" wheels?  Thats plenty wide enough on a 6gc.
[right][snapback]253847[/snapback][/right]

The problem as I stated... most 8.5 inch wide wheels are NOT FWD offset, they are RWD... which is not gonna fit. Judging from the depth of the wheel well, chances of even finding an offset that can clear the fender, let alone tuck under, will be a harsh challenge. Also, when performance is concerned... FWD cars don't need extra rear grip... That'll just induce mad understeer...
[right][snapback]254058[/snapback][/right]

This is probably off topic but it could be an educational discussion. WTF is the difference between FWD offset and RWD offset? Offset is offset. Its the distance in millimeters from the center of the rim (when looking down on the rim as it sits on a car) and the lug mounting surface. If you are comparing offsets of two wheels with posititive numbers, the wheel with the higher number will have a mounting surface that is pushed out further toward the exterior of the car making the wheel "suck in". The reason you need a lower offset when you buy wider rims is that if you keep the offset the same, the extra width of the wheel takes up equal extra space on the strut side of the well and on the exterior side of the well. Now, you can get away with a little less clearance on the strut side but there is no way you will be able to get away with a 40+ offset on 8.5" wide wheels without spacers.
[right][snapback]254065[/snapback][/right]

I have wondered that too, but some car sites state fwd and rwd on their rims so its got to mean something.
I wanted to do 18s front and 19s back, but they only make rims in 18 x7.5 and 20 x 8.5 These are the wheels I wantclick here
[right][snapback]254090[/snapback][/right]

I got curious about this so I did some research. It appears that the terms FWD offset and RWD offset are somewhat archaic and do not provide any useful information. The terms were used awhile ago when FWD cars almost always had large positive offsets (e.g. +40) and RWD cars almost always had offsets that were negative or very close to zero. Ultimately, you can have RWD offset wheels on FWD vehicles and vise versa - assuming they fit. The important point is that they are measured the EXACT same way. So, I stand by my statements in this thread. If you want 8.5" wheels, your offset should be less than 30 unless you have wheel spacers in which case the offset can increase by the width of the spacer. This will allow you to clear the strut. You will still have to analyze whether you can clear the fender. I have strong doubts that you will not be able to without having them rolled or otherwise modified.

Here is a link:

FWD and RWD offset explanation

This post has been edited by jgreening: Mar 7, 2005 - 10:37 AM

[bloodrain]

20's on a sports car is just retarded.

[BrianGT4]

why put larger wheels on the rear anyway???? its a FWD car......

[nightrider]

I am not familiar with your imperial sizes? Besides it’s all down to the profile of your tires I have on my ride (see pics) 18/225/40 rubbers on Khan RSS 18/225 rims. No problem if you keep 5mm clearance front and rear. You can go lower but this will give you a lot more problems and no benefits unless you race on a track!!

[dans_st]

I have 19x8.5 AXIS wheels all around with 245/35/ZR19 TOYO's with a 35mm off-set, and TEIN s-tech springs. WITH NO MODS TO CAR!!!!

with the 19X8.5 on my car there is only about 1/4" of clearance between the part of the strut that holds the lower side of spring and the tires. I think if you(or I) wanted to do a 20x8.5 you would possibly have to do a 38mm-40mm off-set which in my opinion kind-of "sticks out". So a 20x8 or even 7.5 with a 35-38mm off-set would have to be used...???

but as far as my 19x8.5's theyONLY rub(which is rare) when I have passengers in the car and hit a pretty hard dip going over 40-45MPH,
and that is only on my rear passenger side on the inside fenderwell


I am also considering stepping up to a 20x8.0-8.5 AXIS Reverb(gold) I am just saving up more funds since I barely bought my current wheels about 3-months ago.

AND ALSO...
even compared to my 17's I had before, THE 19'S RIDE LIKE S**T, and I'm sure the 20's will be even worse

[tjtcr4]

I run 18x8.5 with 34mm offset all the way around, with no rubbing, fits just right. Just upload some new pictures.
http://www.6gc.net/index.php?action=members&itu=4596

[Nampetch]

I think the offset calculation must be precise otherwise rubbing you would caused. Or get your car a widebody then even 9.5" could fit then..

[tjtcr4]

Hi
Use this web page. it shows you the differnets, then you will know what your looking for.
http://350zx.com/tire-wheel.html