Tires & Engines || EOP || Updated: zondag 22 oktober 2006

Tires S1 - Tires S2 - TRX history - TRX list - Engines

Tires

Original tire specifications Série 1:

• CX 2000 without power steering (C)
  • wheels........................ 5½J x 14 FHA
  • tires front.................... 185 SR 14 ZX or XZX
  • tires rear..................... 175 SR 14 ZX or 185 SR 14 ZX or XZX
  • pressure front / rear...... 200 kPa (2,0 kg/cm²) / 210 kPa (2,1 kg/cm²)

• CX 2000 with power steering (C)
  • wheels........................ 5½J x 14 FHA
  • tires front.................... 185 HR 14 XVS
  • tires rear..................... 175 HR 14 XVS or 185 HR 14 XVS
  • pressure front / rear...... 190 kPa (1,9 kg/cm²) / 210 kPa (2,1 kg/cm²)

• CX 2200 without and with power steering (C)
  • wheels........................ 5½J x 14 FHA
  • tires front.................... 185 HR 14 XVS
  • tires rear..................... 175 HR 14 XVS or 185 HR 14 XVS
  • pressure front / rear...... 190 kPa (1,9 kg/cm²) / 210 kPa (2,1 kg/cm²)

• CX Reflex / Athena without power steering
  • wheels........................ 5½J x 14 FHA
  • tires front.................... 185 SR 14 XZS
  • tires rear..................... 175 SR 14 XZS
  • pressure front / rear...... 190 kPa (1,9 kg/cm²) / 210 kPa (2,1 kg/cm²)

• CX Reflex / Athena with power steering (C)
  • wheels........................ 5½J x 14 FHA
  • tires front.................... 185 HR 14 XVS
  • tires rear..................... 175 HR 14 XVS
  • pressure front / rear...... 200 kPa (2,0 kg/cm²) / 210 kPa (2,1 kg/cm²)

• CX 2400 (C)
  • wheels........................ 5½J x 14 FHA
  • tires front.................... 185 HR 14 XVS
  • tires rear..................... 175 HR 14 XVS or 185 HR 14 XVS
  • pressure front / rear...... 190 kPa (1,9 kg/cm²) / 210 kPa (2,1 kg/cm²)

• CX 2400 Prestige (<< modelyear 1982)
  • wheels........................ 5½F x 14 FHA
  • tires front + rear........... 185 HR 14 XVS
  • pressure front + rear..... 220 kPa (2,2 kg/cm²)

• CX 2400 GTi / 2400 Pallas IE (<< modelyear 1982)
  • wheels........................ 5½J x 14 FHA
  • tires front + rear........... 185 HR 14 XVS
  • pressure front / rear...... 210 kPa (2,1 kg/cm²) / 220 kPa (2,2 kg/cm²)

• CX 2400 GTi & 25 GTi / optional on: Pallas IE & Prestige (modelyear 1982 >>)
  • wheels........................ 150 TR FH 45
  • tires front + rear........... 190/65 HR 390 TRX
  • pressure front + rear..... 220 kPa (2,2 kg/cm²) / 140kPa (1,4 kg/cm²)

  CX 25 GTi Turbo

  • wheels........................ 150 TR 390
  • tires front + rear........... 210/55 VR 390 TRX
  • pressure front / rear...... 230 kPa (2,3 kg/cm²) / 150 kPa (1,5 kg/cm²)

• CX 2200 D without powersteering (C)
  • wheels........................ 5½J x 14 FHA
  • tires front.................... 185 SR 14 ZX or XZX
  • tires rear..................... 175 SR 14 ZX or 185 SR 14 ZX or XZX
  • pressure front + rear..... 210 kPa (2,1 kg/cm²)

• CX 2200 D with powersteering (C)
  • wheels........................ 5½J x 14 FHA
  • tires front.................... 185 HR 14 XVS
  • tires rear..................... 175 HR 14 XVS or 185 HR 14 XVS
  • pressure front / rear...... 200 kPa (2,0 kg/cm²) / 210 kPa (2,1 kg/cm²)

• CX 2500 D with powersteering
  • wheels........................ 5½J x 14 FHA
  • tires front.................... 185 SR 14 ZX or XZX
  • tires rear..................... 175 SR 14 ZX or 185 SR 14 ZX or XZX
  • pressure front + rear..... 210 kPa (2,1 kg/cm²)

• CX 2500 Turbo Diesel
  • wheels........................ 150 TR FH 45
  • tires front + rear........... 190/65 HR 390 TRX
  • pressure front / rear...... 240 kPa (2,4 kg/cm²) / 200 kPa (2,0 kg/cm²)

• CX Limousine Turbo
  • wheels........................ 5½J x 14 FHA
  • tires front + rear........... 185 SR 14 XZX
  • pressure front + rear..... 220 kPa (2,2 kg/cm²)

• CX Break 2000 without power steering
  • wheels........................ 5½J x 14 FHA
  • tires front + rear........... 185 SR 14 ZX or XZX
  • pressure front / rear...... 200 kPa (2,0 kg/cm²) / 220 kPa (2,2 kg/cm²)

• CX Break 2000 with power steering
  • wheels........................ 5½J x 14 FHA
  • tires front + rear........... 185 HR 14 XVS
  • pressure front / rear...... 190 kPa (1,9 kg/cm²) / 210 kPa (2,1 kg/cm²)

• CX Break Athena and Reflex without power steering (?)
  • wheels........................ 5½J x 14 FHA
  • tires front + rear........... 185 SR 14 XZX
  • pressure 175 HR 14 XVS tires... 210 kPa (2,1 kg/cm²)
  • pressure 185 HR 14 XVS tires... 190 kPa (1,9 kg/cm²)

• CX Break Athena and Reflex with power steering (C)
  • wheels........................ 5½J x 14 FHA
  • tires front + rear........... 185 HR 14 XVS
  • pressure front / rear...... 200 kPa (2,0 kg/cm²) / 210 kPa (2,1 kg/cm²)

• CX Break Reflex IE
  • wheels........................ 5½J x 14 FHA
  • tires front + rear........... 185 HR 14 XVS
  • pressure front + rear..... 220 kPa (2,2 kg/cm²)

• CX Break 2400 without power steering
  • wheels........................ 5½J x 14 FHA
  • tires front + rear........... 185 SR 14 XZX
  • pressure front / rear...... 210 kPa (2,1 kg/cm²) / 220 kPa (2,2 kg/cm²)

• CX Break 2400 with power steering
  • wheels........................ 5½J x 14 FHA
  • tires front + rear........... 185 HR 14 XVS
  • pressure front / rear...... 200 kPa (2,0 kg/cm²) / 210 kPa (2,1 kg/cm²)

• CX Break 2200 D and 2500 D (?)
  • wheels........................ 5½J x 14 FHA
  • tires front + rear........... 185 SR 14 ZX or XZX
  • pressure front / rear...... 210 kPa (2,1 kg/cm²) / 220 kPa (2,2 kg/cm²)
  • tires front + rear........... 185 HR 14 XVS
  • pressure front / rear...... 200 kPa (2,0 kg/cm²) / 210 kPa (2,1 kg/cm²)

Off course you only use -tires.

Original tire specifications Série 2:

• CX 20 RE / 22 TRS
  • wheels........................ 5½J x 14 FHA 5-45
  • tires front / rear............ 195/70 R14 MXL / 185/70 R14 MXL
  • pressure front / rear...... 220 kPa (2,2 kg/cm²) / 210 kPa (2,1 kg/cm²)

• CX 25 D
  • wheels........................ 5½J x 14 FHA 5-45
  • tires front / rear............ 195/70 R14 MXL / 185/70 R14 MXL
  • pressure front / rear...... 240 kPa (2,4 kg/cm²) / 180 kPa (1,8 kg/cm²)

• CX 25 RI / 25 Prestige / 25 RD / 25 Limousine
  • wheels........................ 5½J x 14 FHA 5-45
  • tires front + rear........... 195/70 R14 MXV
  • pressure front / rear...... 240 kPa (2,4 kg/cm²) / 200 kPa (2,0 kg/cm²)

• CX 25 TRD / 25 TRi
  • wheels........................ 6J x 14
  • tires front + rear........... 195/70 R14 MXV
  • pressure front / rear...... 240 kPa (2,4 kg/cm²) / 200 kPa (2,0 kg/cm²)

• CX 25 GTi Turbo / 25 Prestige Turbo
  • wheels........................ 150 TR 390
  • tires front + rear........... 210/55 VR 390 TRX
  • pressure front / rear...... 230 kPa (2,3 kg/cm²) / 150 kPa (1,5 kg/cm²)

• CX 20 Break / 25 D Break
  • wheels........................ 5½J x 14
  • tires front + rear........... 195/70 R14 MXL
  • pressure front / rear...... 250 kPa (2,5 kg/cm²) / 230 kPa (2,3 kg/cm²)

• CX 25 TRi Break / 25 TRD Break
  • wheels........................ 6J x 14
  • tires front + rear........... 195/70 R14 MXV
  • pressure front / rear...... 250 kPa (2,5 kg/cm²) / 230 kPa (2,3 kg/cm²)

Aluminium rims (wheels)

If you have corroded aluminium rims you can let them make like new by real specialist companies.
Also if there is a piece broken off they can weld in a piece or even when the rim is crooked they can straighten it again!

You may contact e.g.:

• De Velgendokter; Oostwijk 35 - 5406 XT Uden - 0413-257366
  

Michelin TRX history (source: FAQs about Tires)

A brief history of radial tires... and the offbeat TRX system.

For those of us old enough to remember them, the dominant type of tire construction during the first 70 years of this century was the "bias-ply tire," a tire built up from a carcass of fabric which was then bonded with vulcanized rubber. To give the tire strength, the tire carcass was built up from alternate layers of fabric (the plys) oriented in different directions. Such a tire would have a sidewall as stiff as its tread... and in the case of most bias-ply tires, they were optimized for a smooth ride with 24psi inflation pressures (n.b. the low-pressure bias ply tire was introduced shortly after WW-II).

Beginning in 1955, with the Citroen DS, the radial tire began its use in automotive applications. The radial tire is made up of a carcass of fabric (with the fabric grain oriented in a uniform direction) topped (only under the actual tread) with a number of circumferential belts. The goal of such a design was to build a tire with a much stiffer tread foundation and a much softer sidewall. The stiff tread reduces rolling resistance and improves the geometry of the tread under cornering and braking loads. The flexible sidewall allows for a smooth ride.

(as an aside, many of todays high-performance radial tires have unusually stiff sidewalls, leading to a very harsh ride. many mid-price radials have very flaccid construction, only 3 tread plys, obviating the advantage of radial tire construction. Many racers continue to race on special racing bias-ply tires).

During the 1970's, tire design began to move towards lower profile designs (where the rim is larger and the tire sidewall shorter). Pirelli became famous for it's P7 and P6 tires, both unusually low-profile for its day. At the same time, Goodyear and Michelin began research into lower profile tires with good riding characteristics. The resulting design utilized a rim with a very different tire bead profile... to prevent these new tires from being used on older rims (and vice-versa) a new family of rims was introduced. Michelin called the system "TR" and Goodyear "NCT" - for Neutral-stress Contour Tire. And a family of new, metric rims sizes was introduced : 365mm, 390mm and 415mm.

The TRX tires are of excellent quality, and are only made in select, low-profile, high-performance sizes. The vendors of TRX tires included Goodyear (the departed "Wingfoot"), Sears (via. Michelin), Michelin (the "TRX" and "TRX M+S") and Avon (the CR28). TRX rims were adopted by a number of manufacturers : Saab (390mm TRX on the early 900s), BMW (390mm TRX on the 533i, 633i and 733i), Ford (optional on the Thunderbird, Cougar, Granada, Tempos, Topazes, Escort GTs and standard equipment on early Mustang GTs), Ferrari used the 415mm style on a number of production cars. The French were enamored of the TRX, many Renaults, Citroens and Peugeots (the 604SL and 505GTX among them) came with TRXes.

Unfortunately, the premium-high-performance TRX never caught on in the replacement market. Second owners of 25th Anniversary T-Birds would swap worn 220/55VR390 TRX whitewalls (yes!) on beautiful alloy rims for Fairmont steel wheels, 195/75R14 whitewalls and wire wheel covers rather than pay $150/ea. for a new TRX. Same goes for many Mustang GT owners (since the later GTs came with 225/60VR15 Goodyear Gatorbacks, much wider than the slim 190/65HR390's originally fitted).

Today, the TRX is a limited production speciality tire. Some places, like the Tire-Rack, carry them still. Current TRX manufacture is limited to Michelin and Avon. Sizes offered include :

180/65-390
190/65-390
200/60-390
220/55-390

in the size range to fit your brick.

They are extraordinary tires... having run them on a Saab years ago. Phenomenal handling.

Note from Dr. Theo:
According to Gerald Propsting, the 1st. Radial ply X tyre was 165 x400 and was first fitted to the 11Traction Avant of 1949, not the DS19 of 1955.

 

Replacement TRX tires:	Avon CR28, with H, V and Z specifications.
	Colway CTR, with H and V specifications.

 

More info on:

Passion / UK

 

For sale at:

Classic Tire (Holland)

Oldtimer BV (Holland)

 

		Speed Ratings
		P...  150kmh /   93mph
		Q...  160kmh / 100mph
		R...  170kmh / 106mph
		S...  180kmh / 112mph
		T...  190kmh / 118mph
		U...  200kmh / 124mph
		H...  210kmh / 130mph
		V...  240kmh / 149mph
		Z... +240kmh / +149mph

The wheels above were optional on the Citroën Evasion and maybe will fit the CX.
Several wheels were available in 15", 16" and 17".
PCD = 5 x 98  /  Offset = 28 .. 30  /  Centre bore = 58.0

Bron: Michelin, 'De adviezen van Bibendum' De gevolgen van een andere bandenmaat   Invloed van de montage van een ander bandenmaat op de prestaties van uw auto     Grotere binnendiameter Grotere bandbreedte Grotere velgbreedte Uiterlijk, look Wegligging Reactievermogen, bestuurbaarheid, precisie Grip op droge ondergrond Grip op natte ondergrond Weerstand tegen aquaplaning Comfort en geluid Verbruik Slijtage De bandenmaat wijzigen.. is geen kleinigheid. U moet er rekening mee houden dat dit van invloed is op het remmen, maar ook op de prestaties van de motor, het verbruik, de uitlaat of de transmissie. Wanneer u de oorspronkelijke banden verwisselt, dient u – om redenen van veiligheid – zo dicht mogelijk bij de aanvankelijke diameter te blijven. Het grootste verschil heeft met de breedte te maken. Een stel lage banden kan er met zijn kleinere zijwanden weliswaar mooi uitzien, maar leidt over het algemeen tot een zwaardere besturing. Denk er ook aan om de breedte van de velgen te wijzigen om een optimale bestuurbaarheid te behouden. De belangrijkste verandering in het stuurgedrag van uw wagen is een snellere reactie op stuurbewegingen en een preciezer gedrag in bochten. Uw wagen volgt veranderingen in het wegdek beter, dankzij een groter vlak waarmee het rubber in contact staat met de ondergrond. Voor wat betreft de combinatie bestuurbaarheid en rijplezier, accentueert de wisseling van banden het reactievermogen, maar vergroot tevens het contact met de oneffenheden van de weg.

Tire Size Calculator

Tyre size sorted after circumference
source: http://www.citrotech.se/ , 05-04-2005

Citroën prefers lubricants.

Engines

• CX Pallas IE (1982): ME, M 23/622
  • Type: M 23/622, petrol, 2347 cm³, 4-in-line, 8 valves
  • Bore x stroke: 93.5 x 85.5 mm | Compression ratio: 8.75 : 1
  • Power: 128 DIN-hp (94 kW) / 4800 rpm | Torque: 197 Nm / 3600 rpm
  • Oil: Total GTS 20 W 5 (5.8 dm³ / 5.3 dm³ / 4.65 dm³)

• CX 20 (1983): MP, 829 A 500
  • Type: 829, petrol, 1995 cm³, 4-in-line, 8 valves
  • Bore x stroke: 88 x 82 mm | Compression ratio: 9,2 : 1
  • Power: 104 DIN-hp (76,5 kW) / 5500 rpm | Torque: 163 Nm / 3500 rpm
  • Oil: Total GTS 15 W 50 (5.0 dm³ / 4.75 dm³ / 4.5 dm³)

• CX 22 TRS (1989): NR, J 6T A 500
  • Type: J 6T A 500, petrol, 2165 cm³, 4-in-line, 8 valves
  • Bore x stroke: 88 x 89 mm | Compression ratio: 9,8 : 1
  • Power: 113 DIN-hp (83 kW) / 5600 rpm | Torque: 177 Nm / 3250 rpm

Sources:
Vraagbaak Citroën CX; P.H. Olving; Kluwer Technische Boeken B.V.; ISBN 90-201-2135-7
Original Citroën CX Instruction manuals

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