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Oh no, not tyres again!!

OK, I know I have not driven far and TBH, I am not going to test these tyres to the max on the road when Judgement Day is the next time I am going to drive the car but..........................Today I went for a little spin on dry roads and tried a couple of things I had tried on the S-02's a few days earlier.

I must say I am a bit gobsmacked at the moment. Maybe my memory is playing tricks on me but..................

Situation 1. Coming out of a side turning near where I live (car was warmed up!) I know I have to be a little careful as if I boot it too much too soon, I could totally lose the back end. So, the first time I came out of the road, I booted it mildly and the back dug in and no slide. I thought it was because I was timid so back for another go. I did manage to get the back end to slide but it very quickly dug in and catapulted forward. But, this was on the road and so there is only so much hooliganism you can indulge in.

Situation 2. Genuinely tried in a private trading estate. This was a straight accelration test, seeing what it took to light up the rear tyres. Simply, I had to give up because I became afraid for the clutch. Now, I have done a few quick get aways in my time and think I know how to slip a clutch at high revs and get the tyres to light up just the right amount. After a "gentle" couple of attempts, I realised this needed to get brutal. So I tried 3 times from seriously high revs (5-6K) and I couldn't light up the back end. I began to smell clutch so gave up.

Now, I know that this isn't very scientific but over 300bhp (flywheel) through the rear tyres and no wheelspin means either I have forgotten how to be a hooligan or these tyres are seriously sticky.


PS. After letting the clutch cool down I am pleased to rport there seems to be no slipping. I was getting worried!
 
Hi Simon,

Mytyres.co.uk do the Marangoni Zeta Linea in a 255/40/17 for around £60. I was looking at these for my car for the road. I presume being a softer compound I would not get many miles out of them ?
 
Sounds almost too good to be true but the results are interesting! I'm going to have to get down to 'judgement day 2' just to see what's going on - in the meantime will get a quote on these tyres. Are you running 205's on the front or what?

Tony
 
Simon/Graham,
I'm struggling to identify the right sizes of these Marangoni's. I get a different list of sizes from the Marangoni uk & worldwide websites - some of which don't appear if I search MyTyres.co.uk - but 255/40x17's do and neither Marangoni site lists them!

Simon you now own some of these things what size are they please?

Tony
 
As with many makes, the tyres are not quite standard sizes. Now, I haven't got the stuff here (I am on hols) but, IIRC, I am runnimng 215/45's on the front and 245/40's on the back

It seems running the 215/45's on the front is very popular and is well proven. However, the 245/40's are a bit of an unknown. I took the view that it might give the car a good balance with helping to reduce the chance of washout understeer on turn in while I hope the stickyness will help make up for less width.

I discussed sizes with the UK importer and am pretty confident we cannot get 225/40's.

I will write more after Judgement Day (I won't drive the car until then) but I do feel these tyres have serious potential. As for how long they last, it's and interesting question. I suspect they won't rank highest on wear rate vs price becasue there are tyres that will last forever but these will have very hard compounds and won't give the grip. I suspect that on a price/grip/wear basis, these could turn out to be the new "sliced bread"!

However, as somebody who likes to test these things properly, I don't want to get too carried away until I have driven on them more. If I can, I hope to do some back to back testing with the S-02's.
 
Thanks Simon, I'm currently trying to decide between these and the Toyo Proxies TR1 (both around the same price) so i'd be interested to hear your feedback.

Thanks.
 
Simon,
Any conclusions on the Marangoni Zeta's. Are we talking demon sprint tyres or boat fenders here?

Tony
 
I want to wait until the results are published and I can really analyse what went on. The situation is complicated by the fact I really didn't drive very well in the morning.

However, there are a lot of indications that the tyres are very good. Examining them at the end of the afternoon runs showed significant graining, which suggests a very sticky tyre. I didn't notice any "block wobble" although Colin Belton suggests that for competition purposes they would need shaving. Anyway, an initial analysis of the day....

I think that the tyres were still too new for the first excersise and were very slippery. I was very disappointed with this event based on the results. Last year I did a 72mph, this year my best was 70........until I realised that the way of judging speed had changed. On the one passenger run I did, my passenger reported turn in speed to be 90mph. In other words, compared with last year, I was 20mph faster so maybe not as bad as I thought. But then again, I don't think my technique was good.

On the second excersise, I could not drive the top hairpin. I don't know why, but I was useless. This meant that my times don't tell us much about the tyres. I was really p##sed off until "Bones" told me that my first sector time (up until the straight) was only bettered by one car (OK, it was a GT3). So, in the bit that the tyres would make a difference, I was quick.

Finally, in the last excersise I believe that only Adrian was faster than me of the aircooled cars and on reflection, I now know where I was losing the time to Adrian. Quite simply, I didn't have the experience on the tyres to use them to their max. None of my runs were at all loose. In fact, it was comment on twice that they were incredibly smooth. I don't think I lost any traction and on reflection, didn't come close. On the basis that I don't think I was driving very well on the day and didn't push the car as hard as I should have done on the last excersise, I suspect these tyres are actually very good.

Based on the wear, I don't think they would last very long as a trackday tyre but I intend to find out! At £400 for a set, they need only last half the time of the Cups Sports and having driven on them in the wet, they certainly make a better road tyre!

When I have anylised the results more, I will post whether the data supports the above.
 
ORIGINAL: SimonExtreme







Finally, in the last excersise I believe that only Adrian was faster than me of the aircooled cars
Click to expand...

Simon,
I think I put in a reasonable time as well but picked up a 5 second penalty when finishing in the box.
I am only flagging this up in order for you to achieve an accurate opinion of your new tyres.
Incidently, I ran the event on Dunlop D01J's and felt they were pretty good considering it was difficult to get them warmed up[;)]
 
John

You are correct and IIRC, your time before penalty was 0.15 secs quicker than my best time. However, if you had entered the box a bit slower so you could stop.........

However, it does help prove a point about the tyres. I consider you a more experienced and (currently ;)) better RS driver than I am. Last year you were 2.5 secs quicker than me yet I have caught that up. I would suggest that the tyres are responsible for that. Last year I know I couldn't have gone faster. I was driving really well and was on gthe limit of the grip my S-02's would give. This year, I drove OK in the afternoon but know I should have been quicker because I was never on the edge of the grip available to me (not driving well enough).
 
Hi Simon,
Interesting but the reason I could not stop was that the ABS failed just like Colin's and left me with no brakes just a solid brake pedal[&:][&:]
When I then pulled off again, it was fine[8|]

Cheers

John
 
Odd for 2 instances to occur,,,I have never had problems with it on road or track or heard of such problems!

I wonder is it anything to do with the ABD working, as in taking over for a split second and not a problem as such with the ABS itself?
 
ORIGINAL: John Probert

Hi Simon,
Interesting but the reason I could not stop was that the ABS failed just like Colin's and left me with no brakes just a solid brake pedal[&:][&:]
When I then pulled off again, it was fine[8|]

Cheers

John
Click to expand...
I wonder if the ABS was behaving in "ice" mode or something similar. I had read that if you hit the brakes hard and one wheel has little weight on it, the sensors are confused and the system doesn't behave properly. On the other hand, it could be total BS!!

I thyink the real point is that on a day I didn't feel like I was driving very well, the difference between us was far less than when we did this last year. The best explination I can give for the closing of the time gap is tyres.

We must remember that these tyres I have been trying are suitable as a road tyre or for sprints/hillclimbs. It seems to me that as a road tyre it is a big move forward. It gives a similar performance to Cups or Corsa's while at the same time being proper road tyres that are going to perform well in all conditions, including heavy rain and standing water. As a road tyre, I can wholeheartedly recommend them for their grip and all round ability.

As a race tyre, the jury is still out. It propably wouldn't be a very good trackday tyre because they won't last (although maybe I will find out later this year) but I suspect that as a sprint tyre, if the were shaved, they might well be very good. Whether you would move away from a proven tyre like the Kuhmo's, I don't know but if I had to choose a list 1A tyre right now, they would be it.
 
ORIGINAL: clubsport

Odd for 2 instances to occur,,,I have never had problems with it on road or track or heard of such problems!

I wonder is it anything to do with the ABD working, as in taking over for a split second and not a problem as such with the ABS itself?
Click to expand...
Hi Clubsport,

Over the years it is the first time it has happened to me on road or track[8|]
I put it down to the fact that the airfield at Judgement day was far rougher than any circuit or other airfields I can remember.
On the road, altough rough "B" roads do exist, I would certainly never try to drive them at any where near the pace of Judgement day[&:]
Hopefully it is an experience unique to North Weald[8|][8|]

Cheers

John
 
Thanks for the clarification John, the conditions help to make sense of the symptoms you experienced.

You probably need to change tyres if Simon is getting within a fraction of a second of you [8|].
I am also running D01J, I think I will try the Toyo R888 next they seem to get very good reviews from a few of our Gt3 chums who have tried them.
 
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