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Discussion Starter · #1 ·
Hiya Guys,

Having just had another ‘eventful’ trip to Ring it is time I look at buying a new set of shoes for my R34. My local Belgium dealer is can get me a set of:

Bridgestone SO3 245/40/R18 Rated Y

For four tyres and fitting he want around 1000GBP. How does this sound to rest of the civilized world?

I am looking for a reasonably soft compound that will last at least a couple thousand KM’s. Any else try the S03’s? Is there a better tyre I should try?

/Dan
 

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SO3's

Tyres don't come any softer than the Bridgestone SO2 / SO3.
They don't like heat and they won't last long.

If it don't grip it don't wear!

1k and they are on the money.
 

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Discussion Starter · #3 ·
Ouch!

Ooo 1K, oh well I look forward to trying them in Spa next month. If it rains I guess it will be an added bonus.

Considering I did 8,000 miles on the original tyres and still managed a few days at the ring, multiple trips to the UK and a thrash at Zolder I was pretty impressed with how long they lasted.

/Dan
 

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Tires/Tyres wotever

Dan,

I still don’t get it why people don’t understand the basic science of tyres. :confused:

Simply S-03’s and the like are top quality high performance road tyres, in other words great for driving at high speeds in most normal summer weather conditions on the highways of Europe. :)

Some tyre manufactures are now offering specialist road/track tyres, :) that at least offer a good level of grip in both on both road and track however, they're not so much fun on a wet autoroute. :(

A local tyre dealer to me in Mainz, offered S-03’s for about DM 2,500.00 including fitting. Mainz is only 1 hour from Nuerburgring, you could get your tyres fitted in the morning and wear them out in the afternoon. :D

PS are you going the Spa next month with Wheeltorques?


Regards Paul.
 

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Discussion Starter · #7 ·
Lesson 1

Paul,

Not sure I understand the ‘basics’ of science statement concerning the tyres? Feel free to educate us if you like professor

;)

I do understand that tires induce different handling characteristics so my request for information was purely a request for peoples opinion as to what they have used on their cars. I have also brought tyres for my Porsches based on their track capabilities rather then their practicality on the road (Pzero Corsa's for instance are barely road legal but designed for track use). Continental tires on a Boxster S induce understeer, put Pirellis on and you get instant oversteer. So what are peoples experiences on the R34?
 

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Shouldn't you just invest in some proper semi-slicks for track use?? It seems you are over at Der 'Ring almost every weekend....surely that would be the best solution??!!!!

I'm currently on Yokohama DNA GPs, a Japan only design, and I'm very happy with them. They don't provide the ultimate grip the original Re040s did but they completely eliminated tram-lining...which I'm very happy with. For normal to fast road use they are great but having a slightly harder compound than BS they are not as grippy in the twisty stuff.

If you can get them in Europe try the Bridgestones RE01 which are probably the best around....after the mentione semisliks:D
 

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My 34 came with SO1's ( RE40) and because of the longditudial tread they tramline like mad in London (almost to the point of being unacceptable.) Abbey played with the geometry which has made it better. On a smooth road they are fine.

I am going to consider the Yokis AVS as they eliminate the tramlining at the expence of a little ultimate grip. I'm also considering fitting Trust springs (like Glens car) with 285/35/19 rubber. This way if I use the AVS's 285 instead of 245 stock what I loose in grip due to the compound will be re-couped with more road contact.

I hear that there are many new good tyres on the market which I will research. It used to be a narrow choice between SO2's, F1's and PZero's but with Michelan now in F1 I would expect them to be coming out with something good soon (well it's not hard to better Pilot's which I had on my B10 V8!).

For track days I recommend 10" Slicks directly from the TVR Tuscan challenge. They are sprint tyres, very soft and don't give you Snap oversteer whilst warming up. A set should last you 25 to 30 track days or slightly less if you do airfield days navigating through the side window's!

Jamie.
 

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The Potenza S03 in size 245/40ZR18 are going for $249 USD each here in the U.S.A. I haven't tried the S03 yet, I have the S02 on my Celica and they are awesome. My friend have the S03 on his NSX and he liked them.

I don't understand the term "tram-lining", can someone explain that to me? Sorry we don't have that term here in the US and I want to know what it means. Thanks!

Jeff
 

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Drive into a Tram-Line on a bicycle and try and steer.
 

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"Cable cars"(I believe they are called in the US) like in San Francisco or New Orleans. Well anyway trains that wizz about on roads

From what I've seen in the US roads tend to be pretty well mentained so you probably never encountered "tram-lning"
Here in Japan roads are OK most of the time but the ones with loads of traffic tend to sink a little creating two wheel sized depressions on the roads. These combined with tyres featuring a longitudinal tread tend to pull you from side to side continiously...and can get very annoyng.

Hope that clears it up for you
 

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SO2's & SO3's

I have used SO2's on my Subaru STI5 and found their performance superb both on road and track, although after 4 track days they were a little worst for wear, I replaced them with SO3's and again found the performance very good (I did not get around to trackday on SO3's).

I haven't yet taken my new toy the GT-R33 to any great speed yet so Im unsure what the tyres can do. I would be interested to know what Falken tyres are capable of (unsure of exact type). I suppose if they haven't been mentioned in this thread I guess it speaks for its self!!
 

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Tired Science

Dan,

I gave up teaching 13 years ago. :eek:

Tyres/Tires 101 in a few words without diagrams, tuff but here goes: :rolleyes:

The larger the contact surface the better the grip. :)

The larger and deeper the tread pattern the more water can be cleared away. :)

The softer the compound the better the grip. :)

The softer the compound the faster the wear. :(

The harder the side walls the lesser the flex. :)

The harder the side walls the harder the ride. :(

The point here is that there are a lot of compromises with tyres. :confused:

Other variables are temperature range, that’s the temps at which the tyre will offer it’s best grip. Tyre pressure needs to be right for the circumstances, and also the car setup wheel alignment, etc needs to be correct. :confused:

Good quality road tyres like BS S-03’s have a mix of compounds to give the safest grip throughout the expected life of the tyre, BS have a softer compound at the bottom of the tread because there is less flex in a worn tread.

Road/track tyres have less tread to start with thus less flex, and a larger contact surface and softer compounds.

Bottom-line here is BS S-03’s are an excellent high performance road tyre, although I prefer Falcon FK 451’s because they have stronger side walls for a heavy car like the Skyline they’re better suited too the ring.

If you want to try a road/track tyre try Yokohama A039R’s (a wet weather track tyre) or Yokohama A038R (the famous Lotus 340R tyre). I don’t know of anyone trying these tyres on anything as big as a skyline but Lotus/MGF driver’s love’em.

Hope this helps in your quest for the perfect tyre for your uses. If you find it let us know.

Regard Paul.

PS Jeff, check this out tramlining (nibble). http://www.bentleypublishers.com/gallery.htm?code=grad&seqnum=8
 

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I have a set of Bridgestone RE040 that are almost new and you can have them for £100 a corner.

Let me know.
 

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Have my worzel head on this morning. :eek:
 
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