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I supported Toymods
Location:
Perth
Registered:
May 2002
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 Wheel Offset Different - btw, attn bbaaaccccchhhhhyyy :D
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Tue, 05 April 2005 01:04
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Just a quick couple of questions. Buddy Club has gone bust. Therefore, I have no wheels for the front of my car. I've possibly found some wheels but they are 32mm offset. With the R32 brake upgrade, this will give me an effective offset of 24mm, whereas the rears will be 12mm offset. All will be 16x7.5". Will this adversely affect the handling having a 12mm difference per side?
This brings me to my second question, more importantly directed at Michael. Your Simmons were 16x8" in a 25mm offset correct? I know I've probably asked this, but how much clearance did you have to the strut?
Any ideas would be great.
Cheers,
Nathan
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Location:
Adelaide
Registered:
September 2003
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Re: Wheel Offset Different - btw, attn bbaaaccccchhhhhyyy :D
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Tue, 05 April 2005 02:20
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| justcallmefrank wrote on Tue, 05 April 2005 10:34 |
This brings me to my second question, more importantly directed at Michael. Your Simmons were 16x8" in a 25mm offset correct? I know I've probably asked this, but how much clearance did you have to the strut?
Any ideas would be great.
Cheers,
Nathan
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Hi Nathan,
Just a few too many a's, c's, h's and y's !!!!
Yes my previous rims were 16x8 with +25mm offset. With the MS65 hubs on (I beleieve they space the rim/hub maouting face out wards ~6mm per side - I haven't measured this myself, but a reputable source has), there was about 10mm clearance between the strut tube and the closest face on the tyre (a 225/50x16 btw)
The effective difference in backspace of my rims and yours (negating the change due to the disc mounting change) is about 0.75mm more - ~ 127.25mm.
Note, I also had RA60 strut tubes that also brought the top of the tyre closer to the strut tube.
In summary, I think you should be fine.
Any possibility of test fitting a rim that closely matches the specs from a local wheel supplier ?
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Location:
Brisbane
Registered:
May 2002
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Re: Wheel Offset Different - btw, attn bbaaaccccchhhhhyyy :D
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Tue, 05 April 2005 02:27
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The effective offset of my front and rear wheels is noticeably different. The outer edge of the front tyres only just fits inside the guards, while the rear tyres are well inside the guards despite being quite a bit wider. I haven't measured the actual difference in track width but suffice to say it's quite a lot! Anyway, no problems whatsoever with the handling. If anything it's made the car slightly less tail-happy, and believe me that's a good thing when you have a healthy rwhp figure!
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I supported Toymods
Location:
Perth
Registered:
May 2002
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Re: Wheel Offset Different - btw, attn bbaaaccccchhhhhyyy :D
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Tue, 05 April 2005 02:29
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Haha, just thought I'd jam the keyboard. Well, the ball is in the court of the importer. He's doing me a favour, the auction only has a couple of hours to go. Fingers crossed we get them.
Any ideas on the other factor about the difference? 
Cheers Norbie 
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Location:
Adelaide
Registered:
September 2003
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Re: Wheel Offset Different - btw, attn bbaaaccccchhhhhyyy :D
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Tue, 05 April 2005 02:39
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| Norbie wrote on Tue, 05 April 2005 11:57 |
The effective offset of my front and rear wheels is noticeably different. The outer edge of the front tyres only just fits inside the guards,
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Mine too.
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I supported Toymods
Location:
Perth
Registered:
May 2002
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Re: Wheel Offset Different - btw, attn bbaaaccccchhhhhyyy :D
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Tue, 05 April 2005 03:49
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Well, I've got some wheels coming from Japan, yay! Heres hoping they fit.
Now back to the original question, because I've been trying to search on google and not coming up with much. Overall, I would've decreased my offset by 3mm per side on the front, and 15mm per side on the rears Essentially I'll have 24mm offset on the front and 12mm on the rears.
I know there are some knowledgable engineers on these forums, anyone know what likely effect it will have on handling or the physics behind it?
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Location:
Adelaide
Registered:
September 2003
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Re: Wheel Offset Different - btw, attn bbaaaccccchhhhhyyy :D
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Tue, 05 April 2005 04:05
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| justcallmefrank wrote on Tue, 05 April 2005 13:19 |
Well, I've got some wheels coming from Japan, yay! Heres hoping they fit.
Now back to the original question, because I've been trying to search on google and not coming up with much. Overall, I would've decreased my offset by 3mm per side on the front, and 15mm per side on the rears Essentially I'll have 24mm offset on the front and 12mm on the rears.
I know there are some knowledgable engineers on these forums, anyone know what likely effect it will have on handling or the physics behind it?
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Do you mean that you have increased the offset on the front (going to a more +ve number) and decreased it (less of a +ve number) on the rears ?
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I supported Toymods
Location:
Perth
Registered:
May 2002
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Re: Wheel Offset Different - btw, attn bbaaaccccchhhhhyyy :D
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Tue, 05 April 2005 04:09
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Put it this way, I've got +24mm on the front, and +12mm on the rear. Originally the car would've come with +8mm all round, or +20mm or +27mm (which was the hideous 14x5.5" "Celica" rims). So if you take it from my original hideous rims, I've widened the track both front and rear, but moreso in the rear.
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Location:
Adelaide
Registered:
September 2003
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Re: Wheel Offset Different - btw, attn bbaaaccccchhhhhyyy :D
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Tue, 05 April 2005 05:04
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The main difference is the bearing load increase if you increase the track.
Actual effect can vary with the actual suspension/alignment setups.
To get an accurate picture of what you ahve done is to compare the track before and after taking into account the rim widths and the offsets.
Good to see that you finally got some rims ...
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I supported Toymods
Location:
Perth
Registered:
May 2002
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Re: Wheel Offset Different - btw, attn bbaaaccccchhhhhyyy :D
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Tue, 05 April 2005 05:07
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Okay, we shall just have to suck it and see. Bearing wise, it's a bigger offset than the 8mm Supra ones.
7.5" wide, should be interesting
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