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Alvis Speed 20

Alvis Speed 20 Tyres

Recommended Alvis speed 20 tyres

Alvis speed 20 tyres for a standard car as recommended by Longstone Tyres.
Longstone classic tyres recommend the 475/500x20 Firestone for the early Vintage Alvis speed 20 as they keep the steering light and aesthetically look very vintage. The original equipment for these cars was 525X20. However they tend to make 550X20 tyres these days which make the steering heavier.

Some later Alvis speed 20 cars fitted 550x19 tyres. Longstone Classic tyres recommend fitting the 525/600x19 Michelin Double Rivet vintage tyres

Crossply Tyres

19" Rim Size

Click to View Tread Diameter
(mm)
Section Width
(mm)
Whitewall
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Price (ex VAT)
525/550/600x19 Dunlop B5 791 151 POA
550x19 Lucas 775 152 £149.00
550x19 B.F.Goodrich 790 150 £199.00
525/600x19 Michelin D.R. 805 168 £261.00
550/600H19 Excelsior Comp 787 149 £185.00
550/600x19 Firestone 813 185 £225.00

20" Rim Size

Click to View Tread Diameter
(mm)
Section Width
(mm)
Whitewall
(")
Price (ex VAT)
450/475/500x20 Dunlop B5 773 130 POA
475/500x20 Firestone 777 137 £175.00
475/500x20 Excelsior 775 114 £138.00

Alvis Speed 20


Vintage Alvis Speed 20

The engine for the Speed 20 was based on the one used in the preceding Silver Eagle cars but heavily modifed to give 87 bhp. The chassis was new and lowered by making it a "double drop" type where the side rails go over the front and rear axles. A centralised lubrication system was fitted allowing oil to be provided to moving suspension parts through a maze of pipework. Both front and rear suspension used half-elliptic leaf springs and the brakes with 14 inch drums, mechanically operated. The four-speed manual gearbox was mounted in-unit with the engine.

The car could be fitted with a variety of coachwork. Standard bodies were a four-door saloon from coachbuilders Charlesworth or four-door tourer by Cross and Ellis, but some cars were supplied in chassis form and carried bodies by coachbuilders such as Vanden Plas.


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