Change of tyres and a bit of an experiment
Discussion
Thought I would try some different tyres for my Vantage as an experiment:
Rear: Sailun 275/35R19 Atrezzo ZSR
Compared with Pirelli PZero & Michelin Super Sport they are rated identical, and are marginally quieter.
Front: Nankang 235/40R19 AS-1
Compared with Pirelli PZero & Dunlop Sport Maxx they are rated almost identical.
All 4 tyres purchased and fitted for £352! here at http://www.samko.co.uk/ Must say very nice people.
After fitting I took them for a spirited drive up to Brecon, on a mixture of tight turns and fast open curves, and I must say they are superb. Grip was fantastic, sharp turn in and very comfortable under heavy load both braking and acceleration.
I'll report back after 5,000 miles and see if they are still performing, but first impressions are very encouraging.
Has anyone else tested less well recognised and un-marketed brands?
Rear: Sailun 275/35R19 Atrezzo ZSR
Compared with Pirelli PZero & Michelin Super Sport they are rated identical, and are marginally quieter.
Front: Nankang 235/40R19 AS-1
Compared with Pirelli PZero & Dunlop Sport Maxx they are rated almost identical.
All 4 tyres purchased and fitted for £352! here at http://www.samko.co.uk/ Must say very nice people.
After fitting I took them for a spirited drive up to Brecon, on a mixture of tight turns and fast open curves, and I must say they are superb. Grip was fantastic, sharp turn in and very comfortable under heavy load both braking and acceleration.
I'll report back after 5,000 miles and see if they are still performing, but first impressions are very encouraging.
Has anyone else tested less well recognised and un-marketed brands?
Edited by GingerMunky on Tuesday 17th May 20:32
O dear, I dont think I would have fitted virtually unbranded tyres to an Aston Martin. The Nankangs would be acceptable on a cheap, slow runaround but the sailuns! Errr, no.
As the only actual part of your car that is in contact with the road, and therefore responsible for transmitting all that technology and performance from the car, I do hope that for you........thats remains the only parts of the car that ever make contact with the road.
As the only actual part of your car that is in contact with the road, and therefore responsible for transmitting all that technology and performance from the car, I do hope that for you........thats remains the only parts of the car that ever make contact with the road.
Herbs said:
Any reason for different tyres on each axle?
Sailun don't make the size required for the front 
otherwise would have had all four.Interestingly reading the EU regulations for tyre testing (Regulation EC 1222/2009), the frictional is calculated in the wet for a given speed and then this dictates the rating; Annex 1 Part B has the coefficient / rating table. Therefore, all tyres of comparable Wet Grip rating apply the same force to the road.
divetheworld said:
It's not how they appear to grip now, it's how they let go later after they get warm and stressed.
I agree, that's why I said it was an 'experiment', which most people posting seem to have ignored and jumped on the tyre snobbery bandwagon.For 350 pounds the tyres are cheap enough to just bin them if it were rubbish. Turns out they have been excellent so far and no discernible different to the Dunlop Sport Max.
Perhaps what this thread needs is someone able to explain the difference in chemical compounds used in a Pirelli compared with a Sailun. Explaining which of the most commonly used elastomers "elastic polymers" are used and why; such as polyisoprene (natural rubber, isoprene rubber) / styrene-butadiene copolymer (styrene-butadiene rubber) / polybutadiene (butadiene rubber). And how these are combined with other compounds to improve the frictional force generated. Together with the construction method of the tread, body ply and walls, it would be fascinating insight between a premium and perceived budget.
Now that would be more intelligent and helpful than some of useless s
t posted above 
But hey this is pistonheads.Edited by GingerMunky on Thursday 19th May 13:15
Nothing wrong with it as an experiment
I'd still have gone for the same brand front and rear
They will wear differently and the grip levels with change as they do
So the balance of slip angles will change affecting the grip balance front to rear
I'd still have gone for the same brand front and rear
They will wear differently and the grip levels with change as they do
So the balance of slip angles will change affecting the grip balance front to rear
Edited by mikey k on Thursday 19th May 18:39
I'd say its probably the wrong time of year to put more budget tyres through their paces. I had some god awful Kuhmo's on my old track car, in the summer and on track they were brilliant, anything slightly cool / damp and they made the Corsa's look epic.
Good luck though, I'm not sure saving £400 is worth it. I got a full set of PSS for £824
Good luck though, I'm not sure saving £400 is worth it. I got a full set of PSS for £824
GingerMunky said:
divetheworld said:
Perhaps what this thread needs is someone able to explain the difference in chemical compounds used in a Pirelli compared with a Sailun. Explaining which of the most commonly used elastomers "elastic polymers" are used and why; such as polyisoprene (natural rubber, isoprene rubber) / styrene-butadiene copolymer (styrene-butadiene rubber) / polybutadiene (butadiene rubber). And how these are combined with other compounds to improve the frictional force generated. Together with the construction method of the tread, body ply and walls, it would be fascinating insight between a premium and perceived budget.
Now that would be more intelligent and helpful than some of useless st posted above But hey this is pistonheads.
+1Now that would be more intelligent and helpful than some of useless s
t posted above But hey this is pistonheads.Edited by GingerMunky on Thursday 19th May 13:15
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