TRX

Neutral contour tyre solution

Another revolution

The first “low profile” tyre

Michelin’s invention of the TRX in 1975, allowed a more even distribution of tension in the whole tyre casing, hence the TR designation which stands for Tension Répartie (“distributed tension”). The TRX notably distinguished itself in Formula 1 racing with Renault and Alain Prost and also in the World Rally Championship on the Audi Quattro, 205 Turbo 16, R5 Turbo.

Dimensions

Dimension Seat Sculpture TT/TL Load Index Speed Code Section width (mm) Outside diameter Circ. bearing Rim size
190/55 VR 340 340 TRX TL 81 V 191 550 1672 120 TR 135 TR 165 TR
220/55 VR 365 365 TRX TL 92 V 218 607 1845 135 RT 150 RT 180 RT
190/65 HR 390 390 TRX-B TL 89 H 191 638 1945 120 TR 135 TR 165 TR
210/55 VR 390 390 TRX TL 91 V 219 631 1918 135 RT 150 RT 180 RT
220/55 VR 390 390 TRX-B TL 88 W 227 642 1952 135 RT 150 RT 180 RT
200/60 VR 390 390 TRX-B TL 90 V 206 640 1946 120 TR 135 TR 165 TR
240/55 VR 390 390 TRX-B TL 89 W 239 654 1988 150 TR 165 TR 195 TR
240/45 VR 415 415 TRX GT TL 94 W 253 640 1925 195 TR 210 TR 225 TR
240/55 VR 415 415 TRX-B TL 94 W 239 679 2064 150 TR 165 TR 195 TR

Technical informations

The result of extensive research...

For the first time, the tyre and its rim complemented one another perfectly by making up a single unit. The rim underwent a fundamental transformation, with the essential characteristic of a flatter, lower flange. This new rim and tyre bead design resulted in a gradual curvature of the casing, without the “S” shaped flexing inherent in standard tyres.

...for enhanced steering

Thanks to this innovative construction, the TRX tyre offers better directional stability and makes a great contribution to the active safety of the vehicle due to its exceptional handling close to the limit, especially in bends.

- Outstanding grip thanks to the ideal distribution of pressure in the contact area.

- Excellent comfort due to the increased useful flexing zone.

- New look to the tyre/wheel assembly and heavily sculpted tread pattern.

The adventure of

TRX

The Car Safety Era

The 1970’s saw the beginning of collective car safety awareness. Wearing seatbelts became compulsory and speed limits were introduced on roads and motorways in numerous countries. For tyres, this led to improved grip, more precise steering, as well as enhanced stability and comfort, thus avoiding excessive driver fatigue on long journeys. This decade witnessed the advent of high performance vehicles capable of covering hundreds of miles in one go, with exceptional levels of safety and comfort, such as the BMW 7 series (1977) or 5 and 3 series which followed the same trend, Citroën CX 2400 GTI (1977), 604 (1975), Renault 30, etc... Sports cars also benefited from this progress. Examples were the Ferrari 308 GTS and GTB (1977) and 512 BB (1976), Alpine A310 V6 (1976), Renault 5 Turbo (1979), BMW M 635 (1984), Peugeot 205 Turbo16 (1985), etc... All these cars (and many others) had the Michelin TRX fitted as original equipment, and still can today, with a tyre true to that era, but manufactured using today’s techniques and materials.

1975

Launched in

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