 will 20" x 8.5 fit in the rear? |
 Mar 5, 2005 - 2:49 AM
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 Enthusiast  Joined Mar 19, '04 From Scottsdale, Az Currently Offline Reputation: 2 (100%)  |
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. |
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Mar 5, 2005 - 10:23 PM
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 Enthusiast Joined Dec 27, '03 From Nor Cal Currently Offline Reputation: 0 (0%) |
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 -------------------- "It's ok to be naked girl... I'm an artist!"
1995 AT200 Celica ST: stocked out daily driver... 1984 AE86 Corolla GT-SR5: silvertop 20V 4AGE project car jacked up with goodies... 1991 SW2x MR2 n/a: bare bones hardtop model soon to be... |
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Mar 6, 2005 - 1:21 PM
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Enthusiast Joined Jan 17, '04 From Illinois Currently Offline Reputation: 0 (0%) |
QUOTE(Kwanza26 @ Mar 5, 2005 - 10:23 PM) 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 -------------------- QUOTE(lagos @ Jul 10, 2006 - 1:55 PM) [snapback]454118[/snapback] i know your trying to do the right thing for your motor, but this is one of those times where you should just trust the guys who have had their swaps for a while and have done a ton of research into this. |
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Mar 7, 2005 - 12:07 AM
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Enthusiast Joined Dec 27, '03 From Nor Cal Currently Offline Reputation: 0 (0%) |
QUOTE(jgreening @ Mar 6, 2005 - 6:21 PM) 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... -------------------- "It's ok to be naked girl... I'm an artist!"
1995 AT200 Celica ST: stocked out daily driver... 1984 AE86 Corolla GT-SR5: silvertop 20V 4AGE project car jacked up with goodies... 1991 SW2x MR2 n/a: bare bones hardtop model soon to be... |
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Mar 7, 2005 - 12:19 AM
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Enthusiast Joined Jan 17, '04 From Illinois Currently Offline Reputation: 0 (0%) |
QUOTE(Kwanza26 @ Mar 7, 2005 - 12:07 AM) QUOTE(jgreening @ Mar 6, 2005 - 6:21 PM) 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 -------------------- QUOTE(lagos @ Jul 10, 2006 - 1:55 PM) [snapback]454118[/snapback] i know your trying to do the right thing for your motor, but this is one of those times where you should just trust the guys who have had their swaps for a while and have done a ton of research into this. |
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Mar 7, 2005 - 1:46 AM
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Enthusiast Joined Mar 19, '04 From Scottsdale, Az Currently Offline Reputation: 2 (100%) |
QUOTE(jgreening @ Mar 7, 2005 - 5:19 AM) QUOTE(Kwanza26 @ Mar 7, 2005 - 12:07 AM) QUOTE(jgreening @ Mar 6, 2005 - 6:21 PM) 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 |
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Mar 7, 2005 - 10:34 AM
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Enthusiast Joined Jan 17, '04 From Illinois Currently Offline Reputation: 0 (0%) |
QUOTE(madmods @ Mar 7, 2005 - 1:46 AM) QUOTE(jgreening @ Mar 7, 2005 - 5:19 AM) QUOTE(Kwanza26 @ Mar 7, 2005 - 12:07 AM) QUOTE(jgreening @ Mar 6, 2005 - 6:21 PM) 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 -------------------- QUOTE(lagos @ Jul 10, 2006 - 1:55 PM) [snapback]454118[/snapback] i know your trying to do the right thing for your motor, but this is one of those times where you should just trust the guys who have had their swaps for a while and have done a ton of research into this. |
Posts in this topic
madmods will 20" x 8.5 fit in the rear? Mar 5, 2005 - 2:49 AM
Kwanza26 No... Mar 5, 2005 - 2:54 AM Mr_E Dear god no.
I imagine with enough work you could... Mar 5, 2005 - 3:22 AM boosted_K2 you will need to have the fenders rolled and a nic... Mar 5, 2005 - 6:22 PM celica3sgte I've got 19's front and back. No problems... Mar 5, 2005 - 9:56 PM Andason i have 18s with no problems i think 19s in the bac... Mar 5, 2005 - 10:04 PM
bloodrain 20's on a sports car is just retarded. Mar 12, 2005 - 1:42 AM BrianGT4 why put larger wheels on the rear anyway???? its a... Mar 14, 2005 - 8:06 AM nightrider I am not familiar with your imperial sizes? Beside... Mar 14, 2005 - 8:22 AM dans_st I have 19x8.5 AXIS wheels all around with 245/35/Z... Sep 24, 2005 - 10:43 PM tjtcr4 I run 18x8.5 with 34mm offset all the way around, ... Sep 25, 2005 - 8:18 PM Nampetch I think the offset calculation must be precise oth... Sep 28, 2005 - 4:52 AM
tjtcr4 Hi
Use this web page. it shows you the differnets,... Sep 28, 2005 - 6:00 PM |
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