Circuit Semi Slicks

[MrStabby]

Knew the R888 were too 'soft' for our heavy cars .

I said something like that earlier in this thread and IIRC an mx5 guy said they were shit on his car too... So i guess they're just shit. Cheap tho.

[niZmO_Man]

Apparently good for light cars/hill climbs, meh.

[vkadam]

I am looking for a tyre that is good value for money and offers the best performance for the $$$ to have a go at a few track days.

The car it an R34 GTT. 320RWKW. coilovers, 350mm brakes etc.

I would be putting the tyres on a seperate set of rims to be put on to drive to the track, on the track and back home. Would be from Canberra to wakefield which is roughly 100km each way. I have a separate set of rims and tyres for daily driving.

Rims are:

Desmond Regamaster

17x9 + 38
17x8 +35

I was thinking of getting Nitto NT01

255 40 17

225 45 17

Should be able to get a full set of tyres for around $900. What do people think? Are there any better value options out there?

[fatz]

Djr81 no idea what they are they say c70m on the side

Wil be going to wakefield to see how theg go I would expext a 2 second improvement so aimjng for a 1.05

[djr81]

Doesn't answer your second question but just drive to the track with the R comps on. They will be fine.

[djr81]

You talking about the soft compound Z221 - the C7?

How are they relative to the A050's?

There are part numbers on the Hankook website for the tyres which may line up.

So in 255/40/17 hard is 1010343, medium is 1012650 and soft is 1011508 apparently.

http://www.hankooktyre.com.au/Product/MotorsportTyreSemiSlick.aspx?pageNum=1&subNum=5&ChildNum=3#Z221

Just curious because I would like something a little harder than an A050 and better than an RE55. Almost everything else appears to be sht.

[fatz]

numbers on the side end with 566s

[fatz]

80 tread wear ratting

[djr81]

numbers on the side end with 566s

Think that makes them 245/40/18 soft compound.

[gtr jet]

I am looking for a tyre that is good value for money and offers the best performance for the $$$ to have a go at a few track days.

The car it an R34 GTT. 320RWKW. coilovers, 350mm brakes etc.

I would be putting the tyres on a seperate set of rims to be put on to drive to the track, on the track and back home. Would be from Canberra to wakefield which is roughly 100km each way. I have a separate set of rims and tyres for daily driving.

Rims are:

Desmond Regamaster

17x9 + 38

17x8 +35

I was thinking of getting Nitto NT01

255 40 17

225 45 17

Should be able to get a full set of tyres for around $900. What do people think? Are there any better value options out there?

NT01's will be fine to drive to and from the track on but I'd probably run a wider front tyre if I were you. See if you can get the 255 to fit on the front, if not a 245.

[fatz]

295/40/18

[hrd-hr30]

Hankook compounds:

C30 = hard

C50 = medium

C70 = soft

C90 = super soft

C70 is the norm for sprints and short races.

Edited March 12, 2015 by hrd-hr30

[fatz]

check

[hrd-hr30]

I learnt the hard way. Bought a pair of bargain secondhand 275 Z214 C51 "Mediums" for the back of the Soarer, only to find they were harder and less grippy than the 245 NT01s I had on there. I had NFI about the Hankook compounds at the time, but "medium" sounded like what I wanted for sprints. Wrong! They'r enot that old and had almost new tread, so at first I thought they might just have been cooked or heat cycled too many times. But a mate who runs C70s told me about the compounds... At least it was only $100 bucks wasted.

I bumped into the Hankook rep up here at a hillclimb and he explained the C70 "softs" as really being medium compound and the C50 "medium" is really a hard compound. C90 for Hillclimbs. C70 for Sprints. C50 if you want to do a 3hr race!

[fatz]

what do you kids recomend for tyre pressures for these handcock c70's

[hrd-hr30]

I used 32-33psi hot in mine. C5 compound 275 on a 9.5" wheel. 1530kg Soarer. Good even wear pattern.

[XKLABA]

30 rear 32 front hot 265/35 18 Z221s C70 on R34 GTR 1800kg

Nice even wear

[hrd-hr30]

A050 M seem to grip OK even when cold

just an excuse to post a pic of the mighty 120Y at Mt Cotton yesterday But they are the grippiest tyre I've ever used.

[burn4005]

30 rear 32 front hot 265/35 18 Z221s C70 on R34 GTR 1800kg

Nice even wear

how much front camber did you need on the 34?

[XKLABA]

Need !!, not sure yet but I have 3.3deg ATM and that is nearly enough