Thinking of running slicks
Thinking of running slicks
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Discussion

gruffalo

Original Poster:

8,090 posts

249 months

Friday 17th May 2013
quotequote all
So I am thinking of investing in a set of slicks for track day use, question is what sizes do I need, road tyres are 255/40/17 and 235/40/17.

Any help always appreciated.

iguana

7,301 posts

283 months

Friday 17th May 2013
quotequote all
240/610/17 235/610/17 are pretty close


geeks

11,122 posts

162 months

Friday 17th May 2013
quotequote all
gruffalo said:
So I am thinking of investing in a set of slicks for track day use, question is what sizes do I need, road tyres are 255/40/17 and 235/40/17.

Any help always appreciated.
Be aware, some not all, but some trackday organisers dont allow slicks

gruffalo

Original Poster:

8,090 posts

249 months

Friday 17th May 2013
quotequote all
Thanks to both, plan is to have 2 sets of wheels so I will have the option to allow for weather and/or regulations.

Zumbruk

7,848 posts

283 months

Friday 17th May 2013
quotequote all
Do you have a roll cage? I'd be reluctant to run slicks without one.

Also, slicks put a much larger load on suspension components, so you're going to have to replace bushes & so on much more often.

gruffalo

Original Poster:

8,090 posts

249 months

Friday 17th May 2013
quotequote all
Yep, roll cage is integral in the Cerbera from the factory.

I know about the bushes and so on, I have spoken to a few chaps who race Cerberas and they are saying it does not cause too much of a problem on their cars, but if it does on mine, then, so be it.

Problem is that trackday tyres are likely to be made illegal for road use in 2014 (too noisey?)so they are likely to become very expensive, part worn slicks on the other hand are not looking so I will get some of those and road tyres for the rest of the time. Other problem is how to get a second set of wheels to the track, won't fit in the car so a trailor may become order of the day.

Thanks for the pointers, much appreciated.

RichTBiscuit

434 posts

174 months

Friday 17th May 2013
quotequote all
Zumbruk said:
Do you have a roll cage? I'd be reluctant to run slicks without one.

Also, slicks put a much larger load on suspension components, so you're going to have to replace bushes & so on much more often.
Interesting. Why the link between slicks and a rollcage?

If you're driving the car to the track, I'd personally leave a cage out - can cause more injuries when not wearing a helment!!

amancalledrob

1,248 posts

157 months

Friday 17th May 2013
quotequote all
RichTBiscuit said:
Interesting. Why the link between slicks and a rollcage?

If you're driving the car to the track, I'd personally leave a cage out - can cause more injuries when not wearing a helment!!
My understanding (I'm by no means an expert) is that much higher corner speeds are possible with slicks, and they also tend to let go a bit more suddenly than treaded tyres. Coupled with the fact that corner entry is where mishaps are most common, it means larger impact forces if you meet the armco, or more flips if it goes really wrong.

Can someone let me know if I'm talking out of my arse?

Ta


gruffalo

Original Poster:

8,090 posts

249 months

Friday 17th May 2013
quotequote all
amancalledrob said:
RichTBiscuit said:
Interesting. Why the link between slicks and a rollcage?

If you're driving the car to the track, I'd personally leave a cage out - can cause more injuries when not wearing a helment!!
My understanding (I'm by no means an expert) is that much higher corner speeds are possible with slicks, and they also tend to let go a bit more suddenly than treaded tyres. Coupled with the fact that corner entry is where mishaps are most common, it means larger impact forces if you meet the armco, or more flips if it goes really wrong.

Can someone let me know if I'm talking out of my arse?

Ta
You are both making perfect sense.

At least the cage in the Cerb is well padded and covered in leather:-)

Herman Toothrot

6,702 posts

221 months

Friday 17th May 2013
quotequote all
If you have spare wheels to swap about all fine but I think the TD organisers will agree that it's the chaps with slicks that get pulled out the gravel traps most as they take more heating up and British summers are often randomly wet so the can be a hindrance.

engineer666

32 posts

175 months

Friday 17th May 2013
quotequote all
A few Pax laps from last week Volvo S70 T5, lets just say Thruxton second hand slicks at £30 each are slightly tooooo hard a compound to use unless track temps are in the 30's unless of course your at Thruxton.

http://www.youtube.com/watch?v=A4G8OdDX2b4

http://www.youtube.com/watch?v=rmZFW3U7dY0

mdm1uk

1,344 posts

171 months

Saturday 18th May 2013
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No offence but I think your vid needs a description. Something a long the lines of nothing happens at thruxton. wink;)

mdm1uk

1,344 posts

171 months

Saturday 18th May 2013
quotequote all
Brands hatch I ment