Nic Barnes
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Registered: 5th Apr 04
Location: nowhere near ginger people
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quote:
Originally posted by Adam_B
But then its still sat in the wrong place and drives crap.
yep.
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Dale
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Registered: 7th Oct 07
Location: Swindon
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What size discs are you running nic?
I have come across the same problem there isn't much out there that will give you clearance for the brakes  I trying to find another set of Mo's to run A048r's
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Rob B
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Registered: 8th Jan 04
Location: Area Motorsport Drives: Race EP3
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quote:
Originally posted by Nic Barnes
quote:
Originally posted by Rob B
quote:
Originally posted by Nic Barnes
et15 though. cant find any close to et49. i dont want to mess up the way the car drives with silly offsets or spacers etc. good fitting wheel with correct offset or as near to as possible that also fit over 300mil brakes. i know im asking a lot, as i imagine not a lot of people fit 15" wheels unless theyre on smaller brakes perhaps?
fitting a lower offset and widening the overall track width will improve your handling and argueably your traction off the line too.
If you move to ET35 your gaining 10mm which will make clearence easy 
and fit std arches no problems? dont want wheels that stick out tbh
15x7 ET35 will fit the fronts fine, rear you may have to trim the arch a little depending on ride height.
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Rob B
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Registered: 8th Jan 04
Location: Area Motorsport Drives: Race EP3
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quote:
Originally posted by SportBoy
quote:
Originally posted by Rob B
quote:
Originally posted by Nic Barnes
et15 though. cant find any close to et49. i dont want to mess up the way the car drives with silly offsets or spacers etc. good fitting wheel with correct offset or as near to as possible that also fit over 300mil brakes. i know im asking a lot, as i imagine not a lot of people fit 15" wheels unless theyre on smaller brakes perhaps?
fitting a lower offset and widening the overall track width will improve your handling and argueably your traction off the line too.
If you move to ET35 your gaining 10mm which will make clearence easy
fitting a lower et will make it torquesteer more too, my porshce wheels were around a 35 offset and it was terible compared wth 49. and that was with about half the power nic has.
I would think that was more down to weight than the offset, a wider offset won't make a vehicle torque steer anymore at all.
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Rob B
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Registered: 8th Jan 04
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Not sure where everyone is getting that it will drive crap with a wider offset, where's AK when you need him.
Widening the vehicle track will help the car deal with lateral movement more. Aswell as reducing body roll marginally.
It certainly won't make it torque steer, i bet people who have expereinced this have either fitted different size tyres at the time, or the wheels they've fitted are heavier than previous.
Taken from Balancemotorsport
By reducing a positive ET (ie from ET45 to ET35) figure the track is widened - this can reduce weight transfer in a corner and also decrease the polar moment of inertia - making the car more stable. The opposite is true of increasing offset.
[Edited on 26-10-2010 by Rob B]
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SportBoy
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Registered: 5th Oct 01
Location: Retford, Nottinghamshire
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it will make it torque steer. i know from past experience. maybe not on a 1.4 or even a 2ltr but when it has around 300lbf it will.
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Rob B
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Registered: 8th Jan 04
Location: Area Motorsport Drives: Race EP3
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See quote above, torque steer doesn't bare any relation to track width as far as i'm aware. It does to tyre width and unsprung weight.
Did you have lower profile tyres on the porsche wheels?
[Edited on 26-10-2010 by Rob B]
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SportBoy
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Registered: 5th Oct 01
Location: Retford, Nottinghamshire
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lol well il just say i disagree with you then.
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SportBoy
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Registered: 5th Oct 01
Location: Retford, Nottinghamshire
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yes and no ... i used to run the same on my softstars untill i changed them to 45 profile.
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Rob B
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Registered: 8th Jan 04
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quote:
Originally posted by SportBoy
lol well il just say i disagree with you then.
I suppose thinking about it if you increased the offset massivly like 20 - 30mm then it could possibly highlight it.
I always thought the main cause was unequal drive shafts, I'm sure tyre width and profile play a big part too!
I'd be intrigued if anyone knows, it never did anything on my civic and the track width was increased 20mm as was the tyre width, but then again it only had 175lbft of torque 
[Edited on 26-10-2010 by Rob B]
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Nic Barnes
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Registered: 5th Apr 04
Location: nowhere near ginger people
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Definitely drives loads better without spacers on. Far less torque steer. It's not exactly a 110bhp fwd car which is the problem I guess.
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Rob B
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Registered: 8th Jan 04
Location: Area Motorsport Drives: Race EP3
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Spacers, spacer the wheel out from sitting on the centre bore though. Lower offset wheels won't do that.
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Nic Barnes
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Registered: 5th Apr 04
Location: nowhere near ginger people
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10 mil difference on offset and z 7 inch wheel is going to sit way out compared to correct offset and 6 inch wheel.
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tom_simes
Show Staff
Organiser: South Wales
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Registered: 12th Jan 05
Location: Undy, Newport Drives: Skoda Octavia vRS estate
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quote:
Originally posted by Nic Barnes
10 mil difference on offset and z 7 inch wheel is going to sit way out compared to correct offset and 6 inch wheel.
Yep, 23mm further out.
http://www.1010tires.com/WheelOffsetCalculator.asp
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Novaneil
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Registered: 26th Oct 06
Location: Leamington Spa
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Sorry to bring this back up but I have the same problem...
I got hold of some ET45 15" Prorace 1.2's and they DO NOT fit over my Reyland 300mm Setup... They may if I grind back part of the caliper but I don't want to do that.
Nic, what Offset are your MO's please? As I think i'll go for a set if you say they'll fit.
It seems there's a lot of you talking about fitting Lower offset wheels.... By doing this you may increase the positive scrub radius... This inturn increases steering effort, torque steer and kickback on bumps to a considerable degree.
For those of you who don't know what scrub radius is.... http://en.wikipedia.org/wiki/Scrub_radius
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Nic Barnes
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Registered: 5th Apr 04
Location: nowhere near ginger people
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49, but have to grind calliper a touch as well.
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Gary
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Registered: 22nd Nov 06
Location: West Yorkshire
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quote:
Originally posted by SportBoy
lol well il just say i disagree with you then.
Dnt see how offset would affect torque steer either.
Got any write-ups anywhere to back up you augment. Quite interested actually
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Novaneil
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Registered: 26th Oct 06
Location: Leamington Spa
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quote:
Originally posted by Gary
quote:
Originally posted by SportBoy
lol well il just say i disagree with you then.
Dnt see how offset would affect torque steer either.
Got any write-ups anywhere to back up you augment. Quite interested actually
Gary, Scrub Radius....
I just posted about it 2 posts above. Positive Scrub Radius affects Torque steer
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alan-g-w
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Registered: 9th Nov 07
Location: Glasgow
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quote:
Originally posted by Gary
quote:
Originally posted by SportBoy
lol well il just say i disagree with you then.
Dnt see how offset would affect torque steer either.
Got any write-ups anywhere to back up you augment. Quite interested actually
Maybe the fact that he's probably experienced it himself means he doesn't need to show you a write up? Pretty sure he drives/ drove a LET.
[Edited on 28-11-2010 by alan-g-w]
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SportBoy
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Registered: 5th Oct 01
Location: Retford, Nottinghamshire
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ahh scrub radius ... i have a word for it now then
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