MK5 Golf GTI

All Things Mk5 => Mk5 General Area => Topic started by: Top Cat on June 17, 2009, 05:52:24 pm

Title: How do find out your strut diameter
Post by: Top Cat on June 17, 2009, 05:52:24 pm
Need your help chaps.  :smiley:

I am selling my coilovers and they are the DSG model.

I have been on the phone to KW who have told me the only difference between the DSG and the manual is that the spring rate is a tiny bit stiffer to allow for the extra couple of kilo's that the DSG box carries.
But they will only fit onto a Strut Diameter of 55mil which all DSG cars have. but he said as far as manuals go you could get either of the 2 sizes they do.  :chicken:

So! how and where do you measure the strut diameter on the Mk 5 platform.  :smiley:

Thanks in advance chaps.  :happy2:
Title: Re: How do find out your strut diameter
Post by: luca on June 17, 2009, 05:53:32 pm
 :signLOL:
Title: Re: How do find out your strut diameter
Post by: gazbutS3 on June 17, 2009, 06:07:18 pm
I've bin through this myself TC, it is the diameter of the damper body that engages in the hub at the bottom. When I made some enquiries there was no deffo answer i.e cars before 07 have this size and cars after have so and so. So its just a case of measuring what you have. All of the people I spoke to said they had never come across a 50mm strut. Both GTI's that I had 55 plate regular and 57 plate ED30 were 55mm
Title: Re: How do find out your strut diameter
Post by: Top Cat on June 17, 2009, 06:08:18 pm
Nice one Gaz.  :happy2:
Title: Re: How do find out your strut diameter
Post by: gazbutS3 on June 17, 2009, 06:08:31 pm
What you havin instead by the way?
Title: Re: How do find out your strut diameter
Post by: Top Cat on June 17, 2009, 06:12:56 pm
the only ones that do what i need is the clubsport. or the new hydraulic ones but they lift the suspension as well when fitted so i would need to get the springs cut down according to Kw.
I was starting to glaze over near the end of the conversation.  :rolleye:
Title: Re: How do find out your strut diameter
Post by: gazbutS3 on June 17, 2009, 06:15:59 pm
the only ones that do what i need is the clubsport. or the new hydraulic ones but they lift the suspension as well when fitted so i would need to get the springs cut down according to Kw.
I was starting to glaze over near the end of the conversation.  :rolleye:

are wanting to go lower then?

just went outside and made sure I wsn't talkin b@ll@x, the S3 is 55mm as well :happy2:
Title: Re: How do find out your strut diameter
Post by: Top Cat on June 17, 2009, 06:20:00 pm
Cheers Gaz  :happy2: my problem is because of the offset and the fact i wanted a tyre width that i could drive round bends on. I need a little bit of camber to get it right and my V2 coils dont fit with the top mounts i have bought.  :sad:
Title: Re: How do find out your strut diameter
Post by: gazbutS3 on June 17, 2009, 06:23:16 pm
I see, they rubbing on the inside?
Title: Re: How do find out your strut diameter
Post by: Top Cat on June 17, 2009, 06:29:19 pm
No i have not got any rubbing how it is. but i want the best of both worlds.
I dont want a car that looks great slammed but scrapes and scuff wherever i go.
I want to start doing a few track days next year but also want it as low as i can get it.  :evilgrin:
Title: Re: How do find out your strut diameter
Post by: gazbutS3 on June 17, 2009, 06:40:15 pm
fair enough :happy2:
Title: Re: How do find out your strut diameter
Post by: MAT ED30 on June 17, 2009, 08:45:45 pm
my v3 are from a dsg car fella and work great nice and stiff
Title: Re: How do find out your strut diameter
Post by: the bruce on May 18, 2011, 04:50:14 pm
There's a very simple rule for all Golf V, VI, A3, Leon, Octavia, Scirocco, Passat 3C,
Touran, TT 8J etc.:


If you have the smaller brake (256/280 mm; on the caliper you can read ''FSIII''),
you have the 50 mm strut. This is used from 75 HP to122 HP.

If you have a 288 mm or 312 mm (FN3 caliper; read ''Ate'' on front side) or the 345 mm
brake (FNRG), then you have 55 mm struts. These are used from 122 on and
a few 1.9 TDI are equipped with DSG and with all from 140 HP on.


There is no other way possible. The FSIII does not fit the 55 mm strut and the FN3-
and FNRG calipers do not fit the 50 mm strut.

Fortunately you can see it without removing a wheel. And with most engines you can
easily it's just clearly though.




 :wink:
Title: Re: How do find out your strut diameter
Post by: gazbutS3 on May 19, 2011, 05:58:01 pm
great info :happy2:
Title: Re: How do find out your strut diameter
Post by: Eccie on May 19, 2011, 06:38:59 pm
Have i missed something, I thought the GTi was going TC - Are you keeping it and going all USA with it (low and slow)?
Title: Re: How do find out your strut diameter
Post by: Top Cat on May 19, 2011, 07:45:18 pm
Have i missed something, I thought the GTi was going TC - Are you keeping it and going all USA with it (low and slow)?

Yep you missed something.  :laugh: Check out the date of the first post.  :innocent:  :wink:
Title: Re: How do find out your strut diameter
Post by: the bruce on May 19, 2011, 08:15:48 pm
 :congrats:
Title: Re: How do find out your strut diameter
Post by: stealthwolf on May 19, 2011, 11:37:06 pm
Holy thread resurrection, Batman!
Title: Re: How do find out your strut diameter
Post by: the bruce on May 20, 2011, 08:13:06 pm
The question of the correct strut diameter is ''timeless''.
Title: Re: How do find out your strut diameter
Post by: rex on May 20, 2011, 08:36:38 pm
If you have the smaller brake (256/280 mm; on the caliper you can read ''FSIII''),
you have the 50 mm strut. This is used from 75 HP to122 HP.

If you have a 288 mm or 312 mm (FN3 caliper; read ''Ate'' on front side) or the 345 mm
brake (FNRG), then you have 55 mm struts. These are used from 122 on and
a few 1.9 TDI are equipped with DSG and with all from 140 HP on.

One small correction: to my knowledge all 122bhp cars have 288mm discs so have 55mm struts.

When I needed to find out the strut diameter for the new coilovers I just measured it (took the wheel off and measured the shock absorbers diameter).
Title: Re: How do find out your strut diameter
Post by: the bruce on May 21, 2011, 12:43:20 am
Hi Rex,

there are 122 HP TSI with 280mm/FSIII and 288mm/FN3 as well.
There are also some 1.2 TSI 105 HP with the larger 288mm/FN3 (Seat Leon)
to make it even more confusing.

That's why I recommend looking at the brake caliper. Everbody should be able
to clearly read ''FSIII'' or ''Ate'' on front of the caliper. This is 100 % safe.

I was just wondering why so many suspension parts dealers don't know
this simple fact.

 :wink: