Tyre Question

[WayneXG95]

Now Pete. What dag would do that....

[adsman]

Hi All,

I have a similiar query and problem, just had my EK Ute over the pits to get licenced in WA and they have told me the tyres are to lower profile, the car is running 14 inch rims (HT i think) with 195 x 60 x 14's , what would be the correct profile to be running on 14 inch rims to keep the speedo legit cause im guessing that is the issue, not sure of diff ratios or anything, guessing its the original diff. Has brand new radials so im a bit reluctant to replace.

Cheers,
Ads

[Blacky]

God he must be a fussy bastard if he is knocking you back for that, .

[Devilrod]

I'd ask why he's knocking them back? What's he basing it on that they don't pass? Its not like they'd be fouling on the body or suspension.

[adsman]

As far a s I know the knock back actually came from the Main Roads, the mechanic didnt mention it when he gave me a list of repairs, wasnt until the paper work came back from the Main Roads that the issue arrised.

[Cal]

I'd still ask why. Was it because the rolling diameter is different, or some other reason. I find it very odd they would knock it back for that.

Width of the tyre I can understand, but the profile being too low ?

[adsman]

Rolling diameter was the issue...might be cause he ran out of fuel on the test drive as well haha..

[Cal]

This thread should help

http://www.fbekholden.com/forum/viewtop ... 27&t=18598

[adsman]

So apparently a vehicle should have tyres with a circumference no more than 15mm larger or 26mm smaller than designated for that model by the manufacturer.
I also found out 185/75 - 13's or 195/70 - 14's are the closest you will get to original, the later will put your speedo out about 2 mph, when you doing 55 your actually doin 53 according to the tyre/speed calculator.

[Cal]

I've got 185/80- 13 which are about as close as you'd get to original rolling circumference . Remember these cars had crossplys which had a massive side profile.

Geez, nearly all FB/EK's out there would fall foul of that stupid rule.

Why don't you just loan a set of correct wheels and tyres, pass rego, then put yours back on ?

[adsman]

Thats a WA rule, not sure for the rest of the country, we are a bit behind over here..yeah thats my next option is borrowing a set just for the inspection.