xa0s
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Registered: 4th Mar 08
Location: Dartford, Kent Car: Turbo'd Fabia vRS
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I'm currently running 7J wheels (ET38) with 205/40 tyres. I then added 15mm spacers making them ET23. Theoretically, should this make the car handle better or worse? Where's the line drawn?
I'm looking for new wheels and although a little bit of poke/stretch appeals to me I really want to get the most out of the car so what should I go for if I want the car to handle the best?
Wheel width can be between 7-9J with 195-230/40-50 tyres. Regarding offset, is ET30 compared to ET40 going to make any difference with how the car drives?
Basically, I'm asking what's the best wheel/tyre combo taking only measurements into consideration (not wheel weight, tyre brand, etc) for my Fabia vRS (track/fast road)?
Cheers. 
[Edited on 28-02-2011 by xa0s]
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xa0s
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Registered: 4th Mar 08
Location: Dartford, Kent Car: Turbo'd Fabia vRS
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bump
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RKS
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Registered: 2nd Mar 04
Location: Gloucestershire UK
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what size are your wheels? 15s? 16s?
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xa0s
Banned
Registered: 4th Mar 08
Location: Dartford, Kent Car: Turbo'd Fabia vRS
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16 as standard, 17 now
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Scotty C
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Registered: 6th Nov 05
Location: Kidderminster Drives: 1.6 16v Sport
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As a rule of thumb, the longer the track, the better the car will handle. Also, try and keep un-sprung weight low as possible
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Mobby
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Registered: 31st Dec 07
Location: Leicestershire
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The way iv looked at it is the shorter the wheel base the better handling round tighter corners/tracks.
The wider the wheel base the better the performance round bigger faster corners/tracks
Im running 7.5j 17's and will be spacing them 7mm on the front but there is more room on the back so will that affect my handling is i go winder on the rear? 
[Edited on 28-02-2011 by Mobby]
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R Lee
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Registered: 15th Aug 03
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Wider track increases tramlining on the real road. Take that into consideration.
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Mobby
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Registered: 31st Dec 07
Location: Leicestershire
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http://www.tirerack.com/tires/tiretech/techpage.jsp?techid=47
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dan_m1les
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Registered: 8th May 06
Location: Burnham, Buckinghamshire
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Brothers M3 tram lined like nothing i'd been in before on the road.
You got to draw a line somewhere between track action/daily driving I think.
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Steve
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Registered: 30th Mar 02
Location: Worcestershire Drives: Defender
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what do you want it to handle better for? if track then wider yes.
if road, then you wont be able to drive properly to its limits where wider track would actually benefit anyway so i wouldnt bother
[Edited on 28-02-2011 by Steve]
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Russ
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Registered: 14th Mar 04
Location: Armchair
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Steve you are talking to a boy who does 200mph wheelies over the top of dustbin lorries in the Dartford tunnel
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Graham88
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Registered: 16th Apr 07
Location: South East Kent Drives: E46 M3
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Steve
Premium Member
Registered: 30th Mar 02
Location: Worcestershire Drives: Defender
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honestly though the differences will be that small, that unless you are taking proper racing lines through corners right on the limits its not going to make a difference lol
you dont really get a situation on the road where you can drive like that, iv done some lunatic driving on public roads before and can honestly say iv never pushed it as much as you can on a track
[Edited on 28-02-2011 by Steve]
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xa0s
Banned
Registered: 4th Mar 08
Location: Dartford, Kent Car: Turbo'd Fabia vRS
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Fast road/track, I just want it to be the best it can for track really
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Graham88
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Registered: 16th Apr 07
Location: South East Kent Drives: E46 M3
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If it were me, I'd be keeping it as close to stock as possible, maybe a bit wider track on the rear than the front.
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sand-eel
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Registered: 15th Mar 07
Location: carluke/braidwood--IRNBRULAND
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Some weirdness in here....
Wider track = less weight transfer = better cornering.
Shorter wheelbase = faster turn in/ less stability (vice versa)
Wider TYRES = more tramlining, not wider track.
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antnee
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Registered: 30th Dec 07
Location: Cov Drives: Clio 197
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quote:
Originally posted by sand-eel
Some weirdness in here....
Wider track = less weight transfer = better cornering.
Shorter wheelbase = faster turn in/ less stability (vice versa)
Wider TYRES = more tramlining, not wider track.
Can you explain how a wider track will reduce weight transfer
When spacing wheels/putting wider wheels on, you have to consider the centre pin angle. So don't go too far from OE specs otherwise you will worser handling
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Mobby
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Registered: 31st Dec 07
Location: Leicestershire
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What do you mean by centre pin angle?
The inclination?
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antnee
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Registered: 30th Dec 07
Location: Cov Drives: Clio 197
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Yeah, if the change in width and/or offset means the wheel is miles furhter out from OE spec. I haven't had a chance to read up on it, but my lecturer touched on it last week
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ShEp
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Registered: 9th Aug 05
Location: Dingwall, Highland
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Steve
Premium Member
Registered: 30th Mar 02
Location: Worcestershire Drives: Defender
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quote:
Originally posted by Graham88
If it were me, I'd be keeping it as close to stock as possible, maybe a bit wider track on the rear than the front.
nah in a fwd heavier diesel engined car you want to be inducing oversteer not reducing it, more grip on the front, wider on the front if any
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