Anyone tried ns2r on a heavy car?

Anyone tried ns2r on a heavy car?

Author
Discussion

e46m3c

Original Poster:

874 posts

161 months

Saturday 12th October 2019
quotequote all
I’ve put some ns2r on the front of my c63 to save my mps4s on the odd trackday. They grip well for about 3 corners then squeal like hell and understeer! So much understeer I can’t back it in. Only power oversteer.

Dropped pressures from 38 to 29 cold which was a slight improvement but it still sucks.

I wonder if they just don’t work on heavy cars or perhaps there is any advice to get them working?

e46m3c

Original Poster:

874 posts

161 months

Saturday 12th October 2019
quotequote all
https://youtu.be/xTcxNw3raNE

Actually the experience is now similar to the budget tyres in this vid.

Time to ditch and put some cups on I think.

anonymous-user

60 months

Saturday 12th October 2019
quotequote all
What are you running on the rear and what compound of NS2R are you running? The 180 “street” compound doesn’t have the most grip but it’s consistent and holds up well. The softer compounds are grippier.

Sounds like it’s overworking the fronts very quickly so I wonder if you’ve got an excess of rear grip compared to the front tyres.

itsallyellow

3,672 posts

226 months

Saturday 12th October 2019
quotequote all
Sound like over pressuring will be an issue if your starting them that high.

They seem to work best at about 28 psi when hot. For a 25 minute race we start them between 17 and 22 psi depending on track

Mike

anonymous-user

60 months

Saturday 12th October 2019
quotequote all
Mis-read the pressures in the OP as hot pressures, doh! Yes as the previous poster said that’s too high.

e46m3c

Original Poster:

874 posts

161 months

Saturday 12th October 2019
quotequote all
Oh really? Stock on the c63 is 38psi cold.

I’ll try for 30 hot then on the next trackday.

The feathering looks ok so not sure why a further pressure drop will do much?

Good point on the compound. Let me check it.

e46m3c

Original Poster:

874 posts

161 months

Saturday 12th October 2019
quotequote all
I’m running old conti sport contact 5 on the rear as I’m just finishing them off.

e46m3c

Original Poster:

874 posts

161 months

Monday 14th October 2019
quotequote all
All I can find on the. Is 180 tread ware pattern.

anonymous-user

60 months

Monday 14th October 2019
quotequote all
Ah, 180 tread-wear is the street/hard compound, 120 is medium and I believe they do (or did) an 80 in some fitments.

You won't find them the grippiest by any means, but they should be consistent. I do think a drop in pressure will help them as IIRC they work better at lower pressures on track.

I liked them for the price, but this was a good few years back when they were a conspicuous bargain.

e46m3c

Original Poster:

874 posts

161 months

Monday 14th October 2019
quotequote all
I think I’ll ditch them as it’s ruining the balance of the car.

To be fair they have hardly worn despite chronic 3rd & 4th gear squeezing at Silverstone.

Humour

297 posts

157 months

Thursday 31st October 2019
quotequote all
I've run Conti Sport contact 3 and 5 as well as the NS2R 180 compound for a few years now. Same car setup, same track (the local shakedown spot).

Im terms of lap times there is almost no difference (not timed competitively but done enough laps with a 1Hz Chrono Pro timing to average them out).

The difference is the CSC5 grips from cold and gives consistent grip for the duration of 7-10lap stint. BUT here is the rub, the outer edges wear out after maximum of 600 track miles (2 days), despite over -2.5 deg static camber front and rear. Pressures are 34-36psi hot. In summary despite the grip the sidewalls are just too soft imo.

The NS2R 180 needs at least 1 lap to switch on, then is consistent for 6ish laps after which it starts to squeal and slip, but after 3 days an 900miles it looks like it will last another 3 at least all things being equal, overall we were a little disapointed in the lack of additional grip over the CSC5 but happy with the additional endurance. We do run 34-36psi hot as well, so we may not have got our pressures right according to the other feedback. Will have to try lower pressures to compare.

The car is a stripped and caged e36 at around 1250-1300 wet with a tank full - two bodies of 80ish each on top. Running square setup 225/235 profiles. When we run a staggered setup we found that we could push allot when pressing on no matter the tyres with our setup.

We also run NS2R front axle and CSC5 rear axle square for a couple of days without noticeably loosing balance.

Humour

Edited by Humour on Thursday 31st October 21:20