RE: Rolling Diameter- Help (correction to track info)

[Terry Rudd]

 

Robyn, 

I just realised that you may or may not have 240K struts & brakes so depending on what you have fitted the track info will differ slightly. Her are the popular combinations, all of which are legal.

 

1600 struts/240K stock wheels - track +12mm

240K struts, brakes & wheels  - track +20mm

Your not likely to have stock 13" wheels with 240K brakes but just in case as it is possible then track is then +8mm.

Standard track of a 1600 is 50.4" or 1280mm, SSS is 51.4" or 1306mm

 

Stock 1600 (Aus spec) rims are 13 x 4.5" 100mm backspaced, 4 x 4.5" (or 114.3mm in new speak) PCB and the standard tyre sizes are 165x13 if you can still get them, BR78x13  - revolutions per mile is 885 - 890 depending on brand of tyre. Factory dealer optional mags are 13 x 5.5" (ROH Contessa) with 185/70 x13 and RPM is 895 - 900 with these fitted.

 

240K wheels are 14 x 5.5" and backspace is also 100mm (so you don't have any track issues as it is widened by only  12mm ( + hub height difference  if fitted with 240K struts and brakes in case they can't figure that out either  without measuring it ) - legal limit without engineers report is +26mm) .    The legal tyre size for that wheel on a 1600 is 185/65x14 - Bridgestone Potenza RE92 in that size do 886 RPM and that within the legal limits. Another legal tyre size is 195/60x14 (894 RPM) but 240K rims are at the lower approved limit i.e. 5.5" - 7.0" and I don't particularly recommend this size as they are better suited to 6.0" rims.

 

Take this information to ACT rego before you buy to make absolutely sure that they agree with me - I've had many a discussion with them on such matters over the years, and won most of them. They may force you to use 195/60x14 which will be OK but handling wise the 185/65 x 14 will be better with far less side wall flex. You are allowed + or -15mm overall diameter of the wheel & tyre combination over standard under the National Vehicle Standards Guidelines which the ACT RTA seems to choose to use when they feel like it.

 

Overall diameter info:

13x4.5 with 165SR13 - 599mm (+-15mm range 584mm - 614mm)

14x5.5 with 185/65 - 597mm (legal)

14x6.0 with 195/60 - 592mm (legal)

 

The NSW RTA website has most of the Vehicle standards information sheets and is mostly up to date - this is the link http://www.rta.nsw.gov.au/registration/downloads/vsi/vsi_dl1.html #9 is the one that you are after.

 

Good luck with them,

 

regards

Terry

-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]On Behalf Of Robyn McCaughan
Sent: Thursday, 8 July 2004 6:14 PM
To: [EMAIL PROTECTED]
Subject: Rolling Diameter- Help

Hey All, I have what I believe are stock 240k wheels on my stock 1600 but seeing as they are 14" they won't pass rego. What size tyres do I need to put on them to make them legal? Or has anyone got a set of stockies in the ACT (or willing to ship) that they want to sell... Any help greatly appreciated.

- Datsunheardof  

 

---

Love Movies? You'll love HomeScreen . Rental DVDs - no late fees!
--membersozdat-------------------------------------------------------
OZDAT Mailing List Please Note:-
Send (un)subscribe requests to [EMAIL PROTECTED]
Send submissions to [EMAIL PROTECTED]
No unauthorised redistribution of this email
http://www.ozdat.com/ozdatonline/index.htm
http://www.ozdat.com/ozdatonline/listindex.html
http://www.mail-archive.com/[EMAIL PROTECTED]/
---------------------------------------------------------------------

--membersozdat-------------------------------------------------------
OZDAT Mailing List Please Note:-
Send (un)subscribe requests to [EMAIL PROTECTED]
Send submissions to [EMAIL PROTECTED]
No unauthorised redistribution of this email
http://www.ozdat.com/ozdatonline/index.htm
http://www.ozdat.com/ozdatonline/listindex.html
http://www.mail-archive.com/[EMAIL PROTECTED]/
---------------------------------------------------------------------