Best mod to sharpen steering and reduce tyre wear
#1
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Best mod to sharpen steering and reduce tyre wear
Hi everybody,
I'm a bit too much enthusiastic in roundabouts and country lanes with my 04 WRX. Results: my front tyres wear only on exterior sides.
I'm thinking about having any (cheap) mod that could made my steering sharper and reduce my inequal tyre wear. I've looked at the forum, but it sounds a bit confusing for a newbie like me (for example what the f### is a Whiteline Rear ARB!)
Also I'm not sure at all about stiffening the suspension as on bouncy country lanes it could make the car control worse.
Any expert suggestion welcome!
Thanks a lot,
K2iss
I'm a bit too much enthusiastic in roundabouts and country lanes with my 04 WRX. Results: my front tyres wear only on exterior sides.
I'm thinking about having any (cheap) mod that could made my steering sharper and reduce my inequal tyre wear. I've looked at the forum, but it sounds a bit confusing for a newbie like me (for example what the f### is a Whiteline Rear ARB!)
Also I'm not sure at all about stiffening the suspension as on bouncy country lanes it could make the car control worse.
Any expert suggestion welcome!
Thanks a lot,
K2iss
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If the tyres are wearing unequally on one edge, it might be worth getting the alignment checked/set up for starters. Depending where you are in the country, there's a few specialists that should be able to help - Power Station, TSL, Scoobyclinic to name but three.
Whiteline Rear ARB - Whiteline is the company, ARB = Anti Roll Bar
Whiteline Rear ARB - Whiteline is the company, ARB = Anti Roll Bar
#3
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Read the following documents:-
http://www.whiteline.com.au/articles...on_rails_1.pdf
http://www.whiteline.com.au/articles...on_rails_2.pdf
http://www.whiteline.com.au/articles...on_rails_3.pdf
http://www.whiteline.com.au/articles...on_rails_4.pdf
http://www.whiteline.com.au/articles...on_rails_5.pdf
http://www.whiteline.com.au/docs/art...sp_01_0202.pdf
http://www.whiteline.com.au/docs/art...sp_02_0213.pdf
http://www.whiteline.com.au/docs/art...sp_03_0228.PDF
Whiteline part numbers for the MY03/04 cars is here - http://www.whiteline.com.au/docs/Fac...RX03_sedan.pdf
There's also some Whiteline geometry settings on the 2nd page of the last doc.
Stefan
http://www.whiteline.com.au/articles...on_rails_1.pdf
http://www.whiteline.com.au/articles...on_rails_2.pdf
http://www.whiteline.com.au/articles...on_rails_3.pdf
http://www.whiteline.com.au/articles...on_rails_4.pdf
http://www.whiteline.com.au/articles...on_rails_5.pdf
http://www.whiteline.com.au/docs/art...sp_01_0202.pdf
http://www.whiteline.com.au/docs/art...sp_02_0213.pdf
http://www.whiteline.com.au/docs/art...sp_03_0228.PDF
Whiteline part numbers for the MY03/04 cars is here - http://www.whiteline.com.au/docs/Fac...RX03_sedan.pdf
There's also some Whiteline geometry settings on the 2nd page of the last doc.
Stefan
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Originally Posted by TonyG
Power Station, TSL, Scoobyclinic to name but three.
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#8
The Prodrive Geometry settings alone on my MY02 STI made a big improvement to the understeer.
The prodrive settings on the front wheels include 1.25deg negative Camber, which should save the outside of the tyres a little.
This is the insurance friendly option, and worth a try first I would suggest.
The prodrive settings on the front wheels include 1.25deg negative Camber, which should save the outside of the tyres a little.
This is the insurance friendly option, and worth a try first I would suggest.
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Originally Posted by ShyTot
The prodrive settings on the front wheels include 1.25deg negative Camber, which should save the outside of the tyres a little.
I'm not too sure about having it done because I'm doing half motorway half countrylane travel every day and my insides are also a little bit worn.
#11
Anyone who has been to PowerStation will be their PR man (me included)
Experience counts.
I ran 2.5 deg neg on the front and back of my Sti v3 for 3 years and raced/road drove the car. Tyres wore FLAT across the tread.
It will be incorrect toe that will do for the tyres.
Fill the car up and book it in with Curtis or Andy and be very happy afterwards.
Graham.
Experience counts.
I ran 2.5 deg neg on the front and back of my Sti v3 for 3 years and raced/road drove the car. Tyres wore FLAT across the tread.
It will be incorrect toe that will do for the tyres.
Fill the car up and book it in with Curtis or Andy and be very happy afterwards.
Graham.
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Originally Posted by Erik
Get QST
Quick Steering Rack
and good coilovers, polyurethane bushing and STi front helical LDS limited slip differential.
Quick Steering Rack
and good coilovers, polyurethane bushing and STi front helical LDS limited slip differential.
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So good starting point is ALK, anti lift kit from Whiteline, or Powerflex bushes, booth front and rear wishbone..
Next could be Noltec or MRT top mounts or STi hardened. Iam afraid you cant be able use Noltecs on OE dampers due short thread on rod. Coilver damper have longer.
"Software" tuning is geometry if you change it to toe out 10min and 1,2°neg camber on each wheel you get much rawe car but you gonna pay for it with tyre wear.
If you have friend in USA, rallpec sells helical LSD just under 1000USD. This is best mod becouse all Imprezas loosing his power due open front dif. Your wheel start spin and jus when you really need traction ar front you loose it and car goes heavy undesteer.
At winter/snow is much more funny. At first you turn the wheel and nothig happen, you turn it more and give more throttle. Nothing and you are in corner now... then centre diff cross his mind what happen if I transfer all power from zero traction front to read? So the answer is fu....g oversteered M3
With front LDS are things simple...
Next could be Noltec or MRT top mounts or STi hardened. Iam afraid you cant be able use Noltecs on OE dampers due short thread on rod. Coilver damper have longer.
"Software" tuning is geometry if you change it to toe out 10min and 1,2°neg camber on each wheel you get much rawe car but you gonna pay for it with tyre wear.
If you have friend in USA, rallpec sells helical LSD just under 1000USD. This is best mod becouse all Imprezas loosing his power due open front dif. Your wheel start spin and jus when you really need traction ar front you loose it and car goes heavy undesteer.
At winter/snow is much more funny. At first you turn the wheel and nothig happen, you turn it more and give more throttle. Nothing and you are in corner now... then centre diff cross his mind what happen if I transfer all power from zero traction front to read? So the answer is fu....g oversteered M3
With front LDS are things simple...
Last edited by Erik; 13 August 2005 at 01:09 AM.
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You can get the Quaife front helical torque biasing diff here for around £550 so no need to go to the states. Great piece of kit that biases torque towards the outside wheel even when the inside one is still gripping. The off-centre torque bias really helps to pull the front round under power.
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Iam afraid you cant be able use Noltecs on OE dampers due short thread on rod. Coilver damper have longer.
Andy
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