i30 Owners Club

MODIFYING OR DETAILING YOUR I30 => TYRES | WHEELS | BRAKES => Topic started by: Rattler on November 09, 2010, 02:50:39

Title: Fitting of Mag Wheels (Rims)
Post by: Rattler on November 09, 2010, 02:50:39

Hello All,

I was looking into the idea of getting mags (rims) to go on my i30 crdi, but my brother raised a valid point in regards to larger wheels and tyres throwing out the accuracy of the speedometer. The idea of having the speedo recalibrated or getting a reduction/calibration gear (if one even exists)(????) to ensure i don't end up with a slew of speeding tickets, makes the idea complicated and/or more trouble than its worth.

any and all help / input appreciated.

Many thanks,

                  Rattler

p.s. the picture is what the style of rims i was looking at.

Title: Re: Fitting of Mag Wheels (Rims)
Post by: eyecon on November 09, 2010, 06:31:57

Man why didn't I think of that. doh! I think I'll delete my earlier post because it's so crappy anyway, and insert my new comment here instead. I don't think Rattler read it anyway. Sorry if you did mate  :neutral:

Title: Re: Fitting of Mag Wheels (Rims)
Post by: Dazzler on November 09, 2010, 09:12:27

Rattler,

Here is a tyre calculator link

http://www.miata.net/garage/tirecalc.html (http://www.miata.net/garage/tirecalc.html)

This will help select a suitable equivilent .. also any tyre place worth their salt will help you choose the correct equiv (so it is not that hard after all)

and we have a resident Tyre expert at your disposal (who is currently travelling overseas) he is Trev (AKA Surferdude) and i'm sure he will respond to any questions you PM him (He is nearly as nice as me  :D)

Title: Re: Fitting of Mag Wheels (Rims)
Post by: agentr31 on November 09, 2010, 11:26:43

man!!!! you get tyres that dont affect the rolling diamater...

use the tyre calculator dazzler gave a link to...

Title: Re: Fitting of Mag Wheels (Rims)
Post by: Rattler on November 10, 2010, 02:17:37

Thanks for the link and the advice everyone!

Cheers,
          Rattler

Title: Re: Fitting of Mag Wheels (Rims)
Post by: bumpkin on November 11, 2010, 21:31:21

Ot at the very worst buy a cheap gps with speed readout and use that!

Title: Re: Fitting of Mag Wheels (Rims)
Post by: bobbyd on November 28, 2010, 11:00:59

I fitted 18inch wheels with 215/35 tyres- the speedo is nearly spot on, about 3km/h out at the most according to my gps and the odd radar speed check sign have come across.

Usually factory calibration errs on the side of reading a higher speed than actual- also meaning you clock up mileage higher than actual.

Title: Re: Fitting of Mag Wheels (Rims)
Post by: Master_Scythe on February 19, 2011, 05:34:36

2 tips:

1. Weigh your wheels. We get full size spares here in aus, weigh it, make sure your new wheels come out lighter. That way you KNOW you're getting better performance as well as looks.

2. Second hand, with no damage, will save you a FORTUNE. though you cant always find the ones you want :(