New 18" Rims on 97Calais, "LOW TRAC" Keeps Activating

[RiCeY]

Any car that has ABS requires wheel speed sensors on all four wheels.

Whether its traction or stability control, front wheel sensors are required to give a reference as to what the rear wheels are doing.

 

[RiCeY]

i think traction control does sense the 4 wheels but it's different from ESC

anyway 29 psi is what holden recommends 38 is too way much and, you should of gotten the wheels balanced would of fixed your problem

Gotta love people that have no idea on the topic at hand offering advice.

18" rims - 36psi



And please explain how an unbalanced wheel affects a hall effect sensor..

 

[Darcon666]

Any car that has ABS requires wheel speed sensors on all four wheels.

Whether its traction or stability control, front wheel sensors are required to give a reference as to what the rear wheels are doing.

Completley agreed with you re:ABS sensors on all 4 wheels - where/when the brakes are applied very hard and wheels stops rotating the sensor sends a signal to release/interupt the flow of oil to/from the callipars and so the familiar ABS chirpping happens.

I didn't think that was the TC sensor as well, but hey... What do I know.... I'm no mechanic or Automotive Engineer. :unsure:

 

[oska]

Gotta love people that have no idea on the topic at hand offering advice.

18" rims - 36psi



And please explain how an unbalanced wheel affects a hall effect sensor..

not according to the manual

and who knows about unbalanced wheels maybe they were really out or buckled he said that over 85kph the trac light came on that's about when unbalanced start to wobble

 

[RiCeY]

Way to contradict yourself, the only 18" rim I see on your outdated picture says 230kpa which equates to 33.5 psi, not 29. Note this is COLD inflation temp and this will increase several psi at running temp. Most people dont arrive at the servo with cold tyres now do they.


Manuals arent always accurate and you wont find a tyre manufacturer that recommends running 29psi in low profile tyres, I wouldnt even recommend it in any tyre.

 

[oska]

well i said i like 32 on my 17"

if you can't trust the manual who do you trust?
and manuals for 10 year old cars never get updated ......

that all

 

[RiCeY]

well i said i like 32 on my 17"

if you can't trust the manual who do you trust?
and manuals for 10 year old cars never get updated ......

that all

No you said 38 was too much for his 18s

i think traction control does sense the 4 wheels but it's different from ESC

anyway 29 psi is what holden recommends 38 is too way much and, you should of gotten the wheels balanced would of fixed your problem

All tyres are different so it only makes sense to consult the tyre manufacturer not the 10 year old manual...

 

[oska]

you win

i don't really care

have a great happy and safe new year

 

[RiCeY]

Do I get a medal?

If not this was a complete waste of time on my part.

 

[TonyJZX]

36-38 has always always been fine on low profile tyres

it makes the ride a bit firmer but you get better fuel econ and handling

i'd never run under 30 on any car

recommendations are for normal non performance driving folk who want ride quality over everything else