Jump to content
SAU Community

Rolling Circumference Tripping Out Abs/tc

JimmyRickard
 Share

Recommended Posts

JimmyRickard Mentor

JimmyRickard

Posted
Posted

Hi guys, I recently bought some new tyres for my FG F6 and they are tripping out the ABS & traction control, and also causing a brake failure signal. I took it to Ford Service and was told it was an issue with the size tyres I am using due to the rolling circumference messing with the computer, as they put a set of stockies on which worked fine.

I bought the car secondhand with staggered enkei wheels, which I believe are 19x11 in the rear and 19x8 (?) in the front. Not entirely sure what the size of the wheels are, but the tyres which the car came with were 275/30 in the rear and 245/35 in the front.

I got a set of 285/35's put on the rear as the 275's were stretched, which appears to have caused the issue as I haven't changed the fronts to match. Would putting 40 series tyres on the front fix the problem? I don't want to pay for another set of tyres and have the same issue. Is there a way to calculate this or something?

Cheers

Sinista32 Grand Master

Sinista32

Posted
Posted (edited)

Rear (285x35x19) RR is 341.05

Proposed front (245x40x19) RR will be 339.3

Difference is .5% - so should be within tolerances

Try this link http://www.brspecialtuning.co.uk/Tyre%20size%20calculator.htm

Edit: oh and use same type and brand of tyre.

Note also the 2nd number (40) is a percentage of the first number (245).

Edited by Sinista32

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • GTSBoy
      WGNC34 - floor mats

      By GTSBoy · Posted

      I dunno about that as a blanket statement. Pitwork is Nissan's "Nissan genuine" thing, and for stuff like timing belts, I have found them to be excellent. Of course, for things like oil filters, you always use proper trusted brands anyway, not whatever the OEM has taken to using.
    • MBS206
      R34 Skyline climate control unit transistor

      By MBS206 · Posted

      Ahhhh... If you were putting 12V to the led in there, that's likely made it very unhappy. Chances are how you put power, was 12V across an LED that's meant to only have about 20mA through it at peak, and a forward voltage of about 1.8 to 2.4 volts. That circuit is likely only a 3V3 circuit, and will have a resistor in series with the led too. That's my guesstimate on that light, without having touched one.
    • Murray_Calavera
      Tein Circuit Master- rebuild worth it?

      By Murray_Calavera · Posted

      Another vote for installing them and see how you go.  I mean, you already own them, why would you not fit them? 
    • Duncan
      NC MX5

      By Duncan · Posted

      I have had too many of those over the years, my cars have a toolkit or at minimum a cheapy multi tool thing because its too easy to be snookered by some stupid plastic clip that stops you checking the battery terminal isn't loose.
    • Duncan
      WGNC34 - floor mats

      By Duncan · Posted

      Basically, if there is a part# on the nissan catalogue, it is a genuine part. There is a thing called "new old stock" which is stuff made years ago but never sold (or landfilled), but it is super hit and miss what you can buy. Other than some expensive Nismo stuff there is nothing new being made that suits these cars. The only time to be a little careful is (mostly in the US I think, but maybe Japan too), Nissan started rebranding some cheap crap maintenance parts like oil filters as "Pitworks"; stay away from them, if you are buying cheap just buy whatever the local car parts shop carries The three part numbers have an explanation on Amayama: 0V005 is auto, base style 0V015 is manual 0V505 is auto, hectic momo branded ones, maximum F&F points there!
×
×
  • Create New...