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Discussion Starter #1
What's the final gear ratio for Opel Kadett GSI 16V. It's BY '89
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Thanks
 

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Discussion Starter #3
2 types?

There are 2 different gear ratios??? I didn't know that. Does it have any connection with rim radius?
As I know, there are three tyre types: 1) 195/50-15 2) 185/60-14 - both in Germany-Opel 3) and 185/65-14 in GB-Vauxhall . Can you tell me which goes where?
 

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eh ?

We are talking about the gearbox final drive ratio here ?

The F20 came with 2 variations, 3.55 was the most common.
 

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The Red switch on the Digital Dash is for swapping between those tyre sizes, I never figured out why Vauxhall put on two different tyres that were so close.
 

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Discussion Starter #6
I thought that because of the different tyre profile 65 vs 60. there was different gear ratio. If you calculate combination 65 and lower gear ratio VS 60 and higher gear ratio, you will see that it gives the same speed.
Anyway thanks probably 3.42 in Switzerland .
 
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