Too Much Negative Offset?
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- Rutty
- Roadster Fanatic
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- Joined: Thu Nov 12, 2015 10:18 pm
- Location: Minnesota
Too Much Negative Offset?
I found a set of rims locally that might fit my '69 but I'm afraid that they my not have enough offset and rub on the inside of the fender.
They're 14x6.5 with roughly 3.5" backspace. Using online calculators that equates to -6mm offset. If they fit I'd most likely have to run the narrowest tires that would work with them to keep them from rubbing.
Any thoughts?
They're 14x6.5 with roughly 3.5" backspace. Using online calculators that equates to -6mm offset. If they fit I'd most likely have to run the narrowest tires that would work with them to keep them from rubbing.
Any thoughts?
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Matt
'68 1600 (L20b)
'69 2000
Minnesota
'68 1600 (L20b)
'69 2000
Minnesota
- Alvin
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Re: Too Much Negative Offset?
I have a photo of these mounted on a roadster from bikermike...need to dig it up!
Alvin Gogineni
San Jose, CA
1967.5 SPL/SR20
1997 Acura Integra GS-R
2022 Chevy Bolt EUV
zcarblog.com
Instagram
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My SR20 Build Thread
San Jose, CA
1967.5 SPL/SR20
1997 Acura Integra GS-R
2022 Chevy Bolt EUV
zcarblog.com
YouTube
My SR20 Build Thread
- Alvin
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Re: Too Much Negative Offset?
test
Alvin Gogineni
San Jose, CA
1967.5 SPL/SR20
1997 Acura Integra GS-R
2022 Chevy Bolt EUV
zcarblog.com
Instagram
YouTube
My SR20 Build Thread
San Jose, CA
1967.5 SPL/SR20
1997 Acura Integra GS-R
2022 Chevy Bolt EUV
zcarblog.com
YouTube
My SR20 Build Thread
- Rutty
- Roadster Fanatic
- Posts: 98
- Joined: Thu Nov 12, 2015 10:18 pm
- Location: Minnesota
Re: Too Much Negative Offset?
Are these the ones you're refering to Alvin?
bikermike's have a theaded standoff for knockoff center caps whereas the ones I'm looking at don't. Other than that they look very similar.
bikermike's have a theaded standoff for knockoff center caps whereas the ones I'm looking at don't. Other than that they look very similar.
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Matt
'68 1600 (L20b)
'69 2000
Minnesota
'68 1600 (L20b)
'69 2000
Minnesota
- Alvin
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- Posts: 8381
- Joined: Tue Jan 23, 2007 7:01 pm
Re: Too Much Negative Offset?
Great find! That's what came to mind but not it. I also thought about this red car, but again not like your set


Alvin Gogineni
San Jose, CA
1967.5 SPL/SR20
1997 Acura Integra GS-R
2022 Chevy Bolt EUV
zcarblog.com
Instagram
YouTube
My SR20 Build Thread
San Jose, CA
1967.5 SPL/SR20
1997 Acura Integra GS-R
2022 Chevy Bolt EUV
zcarblog.com
YouTube
My SR20 Build Thread
- Rutty
- Roadster Fanatic
- Posts: 98
- Joined: Thu Nov 12, 2015 10:18 pm
- Location: Minnesota
Re: Too Much Negative Offset?
Funny, that's the car who's rims I've been trying to find. These are close but not quite the same. As long as they fit they'll be close enough for me.
Matt
'68 1600 (L20b)
'69 2000
Minnesota
'68 1600 (L20b)
'69 2000
Minnesota
- redroadster
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- Year: High Windshield-68-70
Re: Too Much Negative Offset?
Mine are 3.5 neg offset weld wheels
W 185 70 14s I used a helper lift spring in the rear , lifts .5- .7 " it can scruff the inner panel occasionally over bumps took pic but to large ? Wouldn t load.
W 185 70 14s I used a helper lift spring in the rear , lifts .5- .7 " it can scruff the inner panel occasionally over bumps took pic but to large ? Wouldn t load.
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Last edited by redroadster on Fri Apr 21, 2023 5:52 am, edited 1 time in total.
Datsun dealer tech 76 to 87
Mitsubishi tech 9 yrs
Volvo, Kia, Toyota too
6 month - Rolls Royce
ASE MASTER TECH 96. - 11
70 SPL 86 Z31 T , Sportster
Mitsubishi tech 9 yrs
Volvo, Kia, Toyota too
6 month - Rolls Royce
ASE MASTER TECH 96. - 11
70 SPL 86 Z31 T , Sportster
- Rutty
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- Joined: Thu Nov 12, 2015 10:18 pm
- Location: Minnesota
Re: Too Much Negative Offset?
Thanks for the input guys. I think I'll buy them to try. If they don't fit I'm sure I can resell them and get my money back out of them.
Matt
'68 1600 (L20b)
'69 2000
Minnesota
'68 1600 (L20b)
'69 2000
Minnesota
- Pjackb
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Re: Too Much Negative Offset?
Is the wheel stamped 6.5 or did you measure the wheel to 6.5" ?
i would be very surprised that this wheel has a negative offset , Measured 6.5 which would make it 5.5" with a +6 offset would make more sense
i would be very surprised that this wheel has a negative offset , Measured 6.5 which would make it 5.5" with a +6 offset would make more sense
- RBMann
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Re: Too Much Negative Offset?
Side note on that picture. My wife bought the car in 2014 from the owner in the photo. Took the car back to stock rims. We didn't love those rims which sat very close to the rear fenders. Sold the rims and tires to an "Ed" in New York Sate. They were his dream rim but he didn't have a roadster yet.Alvin wrote: Thu Apr 20, 2023 4:13 pm Great find! That's what came to mind but not it. I also thought about this red car, but again not like your set
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RBMann
mechanic on '69-1600(not mine)
mechanic on '69-1600(not mine)
- Rutty
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- Joined: Thu Nov 12, 2015 10:18 pm
- Location: Minnesota
Re: Too Much Negative Offset?
RBMann, cool story on the car. Thanks for sharing! I hope Ed from New York ended up finding a roadster.
BTW, nice roadster!
BTW, nice roadster!
Matt
'68 1600 (L20b)
'69 2000
Minnesota
'68 1600 (L20b)
'69 2000
Minnesota
- Rutty
- Roadster Fanatic
- Posts: 98
- Joined: Thu Nov 12, 2015 10:18 pm
- Location: Minnesota
Re: Too Much Negative Offset?
I haven't seen them in person yet. Going to get them tomorrow. I'll let you all know how it turns out.Pjackb wrote: Fri Apr 21, 2023 10:21 am Is the wheel stamped 6.5 or did you measure the wheel to 6.5" ?
i would be very surprised that this wheel has a negative offset , Measured 6.5 which would make it 5.5" with a +6 offset would make more sense
Matt
'68 1600 (L20b)
'69 2000
Minnesota
'68 1600 (L20b)
'69 2000
Minnesota
- redroadster
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- Joined: Tue Mar 12, 2013 10:58 am
- Location: KCMO
- Model: 1500/1600
- Year: High Windshield-68-70
Re: Too Much Negative Offset?
You should check them carefully If that is one of them pictured high strength alum alloy corrode s quick and deep , I had alum that slow leaked air thru the wheel back in the 70s
Datsun dealer tech 76 to 87
Mitsubishi tech 9 yrs
Volvo, Kia, Toyota too
6 month - Rolls Royce
ASE MASTER TECH 96. - 11
70 SPL 86 Z31 T , Sportster
Mitsubishi tech 9 yrs
Volvo, Kia, Toyota too
6 month - Rolls Royce
ASE MASTER TECH 96. - 11
70 SPL 86 Z31 T , Sportster
- Gregs672000
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Re: Too Much Negative Offset?
Three of my '70 era English made Cosmic rims leaked air through bad castings. Fixed with JB Weld! Found it by putting the aired up tire and rim in a water tank to find the bad spot... bubbles!redroadster wrote: Fri Apr 21, 2023 7:32 pm You should check them carefully If that is one of them pictured high strength alum alloy corrode s quick and deep , I had alum that slow leaked air thru the wheel back in the 70s
Greg Burrows
'67 2000 #588
Tacoma, WA
'67 2000 #588
Tacoma, WA
- Rutty
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- Joined: Thu Nov 12, 2015 10:18 pm
- Location: Minnesota
Re: Too Much Negative Offset?
So I picked them up yesterday. The price wasn't bad so I took a chance. The good news is they're 14x5.5 and not 6.5. The bad news is the backspace is not 3.5 but 3. So that puts them at an offset of -6.4mm. With the 185 tires on them they are just hitting the rear fender. If I would get 175 tires and roll the fenders they might work. I like them but am not sure if they're worth the effort.
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Matt
'68 1600 (L20b)
'69 2000
Minnesota
'68 1600 (L20b)
'69 2000
Minnesota