Either 3-piece aluminum or forged wheels in magnesium, with centre locking nut. Often a requirement in group-A.

Dimensions: At a start in 1983 there were only 16" wheels, as in 1984 but at one occasion 17" was tested. Also in 1985 Volvo continued to use the 16" wheels, but again at one occasion, Volvo went to test 17" again, as same in 1986. Both 16" and 17" was homologated as you could, regarding to regulations, use wheels up to two inches bigger then the Volvo original wheel that was 15 inch.

Earlier cars, even so if its was unusual, used a clutch that was pressed onto the centre of the 5-bolt wheels to be able to use centre bolt instead of 5-bolt. (pic 4-5). One to do so was Greger Petersson in 1983.

BBS and Ronal, more uncommon was Compomotive. Speedline that first was introduced in 1985. Both Ronal and BBS were also available in 5-bolt.

(Photo: 240grupp-A.se Archives)
 

(Photo: 240grupp-A.se Archives)
 

(Photo: Rolf Öhberg)  
 

(Photo: 240grupp-A.se Archives)
 

 

(Photo: Peggen Andersson)

 


Front and rear centrelocking

First generation group-A Volvos from 1983 had a special hub was mounted onto the original 5-bolt hub. These hubs was built and sold by TL Racing, Sweden in the start for the privateers. (NOTE that the hubs on the photos are not actual hubs but only demonstratively shown). The real centre hubs were introduced in 1984 and were manufactured by Volvo, and Volvo saw to that all teams got their hubs.




Special center hub (knock-off) bolting system (left and right threads), was introduced in 1984 by Volvo, hubs with heat sinks first came in 1986, the heat sinks cooled the hub and also the wheel bearing (pic 4). Approx 700 torque was used to tighten the nut. A M72 nut casing with a wrench powered by compressed air was used to tighten the nut. Special driveshaft’s with center hub.

A special nut was produced when it came to secure the car during transports. (pic 9-10) Also a safe pin was used to make sure that the nut did not come of the hub, even so this happened at some occasions! (pic 11-12)

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(Photo: 240grupp-A.se Archives)
 

(Photo: 240grupp-A.se Archives)
 

(Photo: 240grupp-A.se Archives)
 

   

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(Photo: 240grupp-A.se Archives)
 

(Photo: 240grupp-A.se Archives)
 

(Photo: 240grupp-A.se Archives)
 

(Photo: 240grupp-A.se Archives)

(Photo: Lars Thenander)


BBS

BBS E55 (or BBS E50 - 5-bolt) 16" (17" -86) Some team used wheel plates (pic 2, 4, 5 & 6) that was mounted on the wheel, this to cool down the brakes. Teams that used this were the 1984 Lunar Volvo and the Australian cars in 1986. And the cooling plate was always mounted on the front wheel, this because the front brakes are always used more then the rear brakes.

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(Photo: 240grupp-A.se Archives)
 

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(Photo: 240grupp-A.se Archives)
 

(Photo: 240grupp-A.se Archives)
 

(Photo: 240grupp-A.se Archives)

(Photo: Johan Gustafsson)


Ronal Racing

Ronal Racing 16" (17" -88), a more common wheel among the privateer teams, both centre bolt and 5-bolt. Only the centerpiece was from Ronal, the rims came from BBS.

(Photo: 240grupp-A.se Archives)
 

(Photo: 240grupp-A.se Archives)
 

(Photo: Tommie Lindström ) (Photo: Torbjörn Johansson)


Speedline

The Speedline 17", a five spoke wheel in magnesium with hollow spokes. Was introduced in 1985 by Peggen Andersson in Sweden. This wheel did not re-appeared again until 1986 on the #604- and #605-cars. There were also an earlier and another wheel from Speedline that Per Stureson (IPS Motorsport) used in 1985 at his DTM-Volvo, that same model was also used by Volvo on their test cars during 1983-1984.

(Regarding the 5-spoke 17" Speedline there only are 11 (to me known) complete sets of these wheels including the two cars at the Volvo museum in Gothenburg)

(Photo: 240grupp-A.se Archives)
 

(Photo: Rolf Öhberg)
 

 
(Photo: 240grupp-A.se Archives)  

 
Compomotive

Compomotive Turbo 16" was the only wheel that was used by Volvo in 1983; some teams used the wheel in 1984 to.

(Photo: 240grupp-A.se Archives)

(Photo: 240grupp-A.se Archives)