14inch pug wheels. put speedo out pleas help

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El_Freddo
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Post by El_Freddo » Thu Nov 13, 2014 9:22 pm

I've recently found this site's speed/rev calculator for each gear in either miles or km/h. Yes it's VW/subi gear related, just scroll down until you find the calculator!

If you don't know your tyre's specs, like me, just convert the diametre in inches to millimetres and go from there. Worked a treat for my research.

I'll be referencing this page in another thread ;)

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Bennie
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d_generate
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Post by d_generate » Fri Nov 14, 2014 6:04 pm

Tyre calc here in metric & imperial http://www.miata.net/garage/tirecalc.html
98 Libbo with V3 STI running gear. 13.0 @ 105mph with CAI & 3" Zorst:mrgreen:
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Proton mouse
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Post by Proton mouse » Fri Nov 14, 2014 8:25 pm

If you haven't noticed already Ben, you will also have a slight decrease in braking efficiency too, with the bigger wheels, so factor that into your driving!
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Ben james
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Post by Ben james » Sun Nov 16, 2014 11:43 am

what is the worst is lack of power now.
hills i could make it up i cant any more as half way up
i drop power and stop.
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tambox
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Post by tambox » Mon Nov 17, 2014 6:23 pm

Had the same problem, EA82T fixed it:)
L serious, still.
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El_Freddo
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Post by El_Freddo » Sat Dec 13, 2014 11:12 pm

tambox wrote:Had the same problem, EA82T fixed it:)
EJ22 fixed it for me - and 4.11 ratio diffs (later) just made it all the more better!

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RSR 555
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Post by RSR 555 » Fri May 01, 2015 11:47 pm

tambox wrote:Had the same problem, EA82T fixed it:)
El_Freddo wrote:EJ22 fixed it for me - and 4.11 ratio diffs (later) just made it all the more better!

Cheers

Bennie
EJ20T fixed it for me :)

But yes, any increase in rim diameter will decrease performance and speedo readings.

Why did you go the 14" rims? just for ground clearance? I would just raise the suspension via the factory strut adjustment when going offroad and lower it back down when you're not.
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El_Freddo
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Post by El_Freddo » Sat May 02, 2015 8:42 pm

RSR 555 wrote:EJ20T fixed it for me :)
Ah touche!

All we need now is Venom to drop in and say a H6 fixed it for him :p

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Bennie
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