independent tyre test

Technical advice Q&A

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dougal
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#1 independent tyre test

Post by dougal » Mon Jun 24, 2024 10:55 am

Hi

Have you seen the tyre test done by The German classic car magazine Auto Bild Klassik? I dont know if you will be able to make this PDF work?

file://austin/Google%20Drive%20on%20austin/LONGSTONE%20cars/Jaguar%20Pictures/e%20type/Editorial%20E-Type%20Auto%20Bild%20Klassik.pdf

Anyway this is the translation of what i have been given

Auto Bild Klassik print edition
Fresh rubber at the start
After ten years at the latest, your oldie needs a new set of tyres. Fresh rubber in a classic design increases safety and reactivates driving pleasure - if you choose the right tyres.
From the outside, they are still as round and black as they were more than 100 years ago. But the wheel of time has not stood still: the know-how and technology used to build vintage tyres in the style of the 1960s has come a long way. Charles Goodyear, Robert Thomson, John Dunlop, Charles Welch and the Michelin brothers are the inventors and pioneers of the pneumatic tyre. In their early days, pneumatic tyres were notoriously unreliable and burst tyres were the cause of many serious accidents. It was not until 1920 that their suitability for everyday use was improved with the introduction of cord fabric in the carcass, steel wire in the bead and appropriate tread design.
This increased the life of air-filled cross-ply tyres from a meagre five to 20,000 kilometres, and they replaced the reliable but very uncomfortable solid rubber tyres.
From 1946, the first radial tyres with radially arranged carcass plies and stabilising belt wrapping again revolutionised driving dynamics in the wet and when cornering. With the introduction of the low-profile tyre in 1965, the tyre was then deliberately used as a visual style element for sporty vehicle design.
The treads became wider and the sidewalls flatter. With the 15-inch tyres of the 70 series, which were just 205 millimetres wide, our vintage-style test subjects are still miles away from the dimensions of today's sports tyres.
In the 1960s, the tyre sizes used on today's small cars were sufficient to keep 270hp supercars with a top speed of 240km/h safely on the road.
The Jaguar E-Type, built from 1961 to 1974, is now regarded as an icon of sports car design of the era, and this is even more true of the twelve lightweight variants that were successfully raced.
Unlike the standard E-Type, the monocoque was made from aluminium sheet and the powerful brakes were taken from the Mark IX luxury saloon. The 3.8-litre six-cylinder engine has a redesigned aluminium block, while the cylinder head is a modified version of the legendary D-Type.
Our beautiful red test E-Type is a detailed replica and, like the original lightweight, is based on the E-Type Roadster. We have tested which modern tyres with classic tread patterns are best for getting around.
With an unladen weight of less than 1,000 kilos and 270 horsepower under the aluminium bonnet, the Lightweight is ready to take to the track. The twin Pirelli tyres, with their crisp steering and perfect lateral control, ensure safe and fun driving.
The chasing pack also impresses with its consistently safe handling. Michelin's XWX lacks lateral control and lags behind the competition in terms of handling.
Pirelli's two classics have the best grip in the wet; on the watered wax ring they take the lead with their direct steering response and well-balanced handling. The competitors from Dunlop (Sport Classic) and Vredestein also cut a good figure in the wet. With less lateral grip and limited reserves for aquaplaning, Dunlop's Aquajet and Michelin's XWX are only in the middle of the pack. China's Radar Dimax Classic, on the other hand, slides like soft soap and is out of the running.
Conclusion by Dierk Möller
Modern tyres with historic treads are like a fresh cell treatment for the oldie. Thanks to modern technology, they improve driving dynamics and increase safety reserves at the same time. However, vintage car fans will have to dig deep into their pockets for these tyres.
Pirelli Cinturato HS CN12 96 W
Strengths
Excellent wet grip, precise steering, sporty and agile handling, short braking distances, good aquaplaning reserves, good rolling comfort.
Weakness
Increased rolling resistance
Pirelli Cinturato P5 96 W
Strengths
Excellent wet grip, precise cornering, sporty and crisp handling, short braking distances, very good aquaplaning reserves
Weaknesses
Increased road noise, high rolling resistance.


Interestingly both Pirelli tyres got slammed for noise and rolling resistence. But of course they would. Both the P5 and CN12 are genuine classic tyres. When you compare classic tyres to modern tyres like the Dunlop Sport Classic and Vredestein Sprint Classic these modern tyres have a massive advantage with noise and rolling resistence, these features weren't a so much of a consideration in those days. These are the 2 features that modern tread design has dramatically improved. so the modern tyres in this test do have an unfair advantage in these issues.

here are the results


Image

I must say i was pleased with the results, in that it backed up exactly what we say about tyres in this size and tyres for Jaguar specifically. classic jaguars with power steering go for the P5 and if you have a jaguar that should really be on a 185R15 (or 6.40-15 crossply) the the Cinturato CN12 is the best.

Both Pirelli tyres wiped the floor with all the competion both in the dry and in the wet when it came to driving. The Dunlop simply snuck in because of its rolling resistence and noise scoeres.
Chain Gang for ever

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mgcjag
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#2 Re: independent tyre test

Post by mgcjag » Mon Jun 24, 2024 12:26 pm

No need to post the same information in 3 different sections ..iv deleted the others....Steve
Steve
69 S2 2+2 (just sold) ..Realm C type replica, 1960 xk150fhc

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#3 Re: independent tyre test

Post by rfs1957 » Sat Jun 29, 2024 6:13 pm

Bugger, I’ve just fitted Michelin XVS - strange that they tested XWX, when I’ve never even seen them suggested as a fitting for the E-Type. And certainly not by Longstone ……..

And when the correct original 185/80 profile doesn’t even exist in the XWX range, as they seem to be /70.

Price here for 5 x XVS-P fitted and balanced, 1.254€ - albeit H rated, as 210kmh is quite quick enough for me.

The P suffix - Protection - is for the version that has a raised rib on the flank to protect it upon lateral contact with kerbs and the like.
Rory
3.8 OTS S1 Opalescent Silver Grey - built May 28th 1962

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dougal
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#4 Re: independent tyre test

Post by dougal » Wed Jan 08, 2025 11:02 am

rfs1957 wrote:
Sat Jun 29, 2024 6:13 pm
Bugger, I’ve just fitted Michelin XVS - strange that they tested XWX, when I’ve never even seen them suggested as a fitting for the E-Type. And certainly not by Longstone ……..

And when the correct original 185/80 profile doesn’t even exist in the XWX range, as they seem to be /70.

Price here for 5 x XVS-P fitted and balanced, 1.254€ - albeit H rated, as 210kmh is quite quick enough for me.

The P suffix - Protection - is for the version that has a raised rib on the flank to protect it upon lateral contact with kerbs and the like.
Up untill Pirelli entered the market we would suggest the XWX as a great tyre in a warm climate. we would also say if you were fitting a over size tyre to a car that should fit a thinner full profile tyre then the XWX is a very good option because it has a carcass designed to work in the enviroment of an old chassis.

XVS are great tyres. I have them on my Rolls Royce.

https://www.longstonetyres.co.uk/michel ... s/xvs.html

They also make a white wall 185R15 XVS, however the though of fitting a white wall on an E-Type makes my skin crawl.

Yes an e-type will benefit from the V rated tyre reall the carcass is slightly more sporty. but the difference is subtle.

However most importantly a 6 cylider E-Type handles better on a 185VR15 tyre. We are big fans of the 185VR15 Pirelli Cinturato CA67. (the Michelin XVS is also great.) what that tyre test really proves is that the Pirelli 205/70VR15 tyres are the best tyres for a non power steering car of this period if you are going to fit a wrong size tyre.

If it power steering the the P5.
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dougal
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#5 Re: independent tyre test

Post by dougal » Wed Jan 08, 2025 11:08 am

mgcjag wrote:
Mon Jun 24, 2024 12:26 pm
No need to post the same information in 3 different sections ..iv deleted the others....Steve
I dont understand why? there is a need to post it in different section. some people dont come on this forum so reguilarly, or look at the different sections. they may just go in the one they feel is relavent to them eg 'series 1'

I posted it in perfectly relative sections of your forum to inform your members of some news that is very poignant to different sectors of your members. It isn't just technical. It is also general, and relavent to sereis 1, 2 and 3 car owners.
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#6 Re: independent tyre test

Post by mgcjag » Wed Jan 08, 2025 11:24 am

Read the home page that describes what each section is for.....Your post above was not specific to a model...I assume that's why you posted in the Technical section.... I will delete duplicate posts......anyone wanting tyre information can use the search function or ask the forum.....Steve
Steve
69 S2 2+2 (just sold) ..Realm C type replica, 1960 xk150fhc

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malcolm
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#7 Re: independent tyre test

Post by malcolm » Thu Jan 09, 2025 9:36 am

I understand there is some self interest in Dougal publishing these posts with links to his site. However, I must say I find the tyre tests interesting, and also Dougal has been good in his dealings with me, particularly when I had a dodgy tyre from Pirelli.
Malcolm
I only fit in a 2+2, so got one!
1969 Series 2 2+2
2009 Jaguar XF-S
2015 F Type V6 S

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#8 Re: independent tyre test

Post by mgcjag » Thu Jan 09, 2025 9:51 am

Hi Malcolm....I treat everyone the same here on the forum....it shouldn't be difficult to post in the correct section......If a post is duplicated then I delete it........if you have something to sell then post in the sale section with a price........Steve
Steve
69 S2 2+2 (just sold) ..Realm C type replica, 1960 xk150fhc

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