Re:Calibration after tyre change?

We do not have that on jimnies gen4 here in South Africa.

My point is on lift of 40 or 50mm I can maybe understand re calibration, but 10mm, can it really have such a difference of car computor calculations?

BUT

If not re-calibrated.
(example is extreme, and dont qoute my figures here- purely for illustration purposes of a point.)

Computor can calculate to bring vehicle to a stop in e.g. 5.13meter normally (computed and actual. Now it calculate it to bring vehicle to stop in 5.13meter computed but actual will be 5.25meters. Can that distance make a difference between life and death.

If that little extra distance cause a death, are you willing to live with fact that you know the jimny could have stopped in 5.13 meter and the some iron piece/rod that caused the fatal injury/ death, would not have penetrated that extra 10mm into a scull if the car was calibtrated.

It is 1 out of million change that it could happen, so highly unlikely, but it is a possibility.

I dont know your laws in your country.
We all make decisions like these everyday and we always live with the consequences.

Only you can really say/decide if you want it re-calibrated or not and then live with that decision.






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wrote:

We do not have that on jimnies gen4 here in South Africa.

My point is on lift of 40 or 50mm I can maybe understand re calibration, but 10mm, can it really have such a difference of car computor calculations?

BUT

If not re-calibrated.
(example is extreme, and dont qoute my figures here- purely for illustration purposes of a point.)

Computor can calculate to bring vehicle to a stop in e.g. 5.13meter normally (computed and actual. Now it calculate it to bring vehicle to stop in 5.13meter computed but actual will be 5.25meters. Can that distance make a difference between life and death.

If that little extra distance cause a death, are you willing to live with fact that you know the jimny could have stopped in 5.13 meter and the some iron piece/rod that caused the fatal injury/ death, would not have penetrated that extra 10mm into a scull if the car was calibtrated.

It is 1 out of million change that it could happen, so highly unlikely, but it is a possibility.

I dont know your laws in your country.
We all make decisions like these everyday and we always live with the consequences.

Only you can really say/decide if you want it re-calibrated or not and then live with that decision.






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I don't think the vehicle has a ride height sensor nor does it know the position of the suspension compression. So I'm not sure how this could really be an issue. As the height of the camera will depend on many things and it will move up and down relative to anything it can see, as the suspension extends or compresses or the front of the vehicle is in a dip or on a rise compared to the rear. Tyre pressures could also impact this.

The 4 does have a ride height sensor which is primarily for the headlamps but it's likely also used for other things like collision avoidance.

wrote:

The 4 does have a ride height sensor which is primarily for the headlamps but it's likely also used for other things like collision avoidance.

Isn't it only for one axle (rear) though? It'd know pitch, but not actual height. No idea how it works, just taking a guess.

Lambert wrote: The 4 does have a ride height sensor which is primarily for the headlamps but it's likely also used for other things like collision avoidance.

Lambert, Yes, to be honest i have no idea as we dont have the collision avoidence system.

I do know the on on the back axle adjust headlights as I had to add longer one after I did 50mm lift.

My point largely was on collision avoidance system and sure cameras angle pitch and computor somehow work out some distance somehow.

Glad we do not have collision avoidance system added here in South Africa. 1st world things not always gel with 3rd world counties infrastructure.


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wrote:

Answer to my own question above:

Since the BFG tyre is 1.0 cm higher than the Dunlop, it raises the car by half of that which is a mere 0.5 cm. 

So I say it's BS and

Just a suggestion for your consideration - what's the "tread depth" like - what is the difference in vehicle height between a brand new tire and that same tire when it is at the minimum safe tread depth?  I'm estimating at least 5~6 mm, and I can't see Suzuki recommending a recalibration because the tires are worn, or owners being willing to pay for it.

I'm agreeing with you, there's some BS being spread there.

I just ordered 215/75R15 General Grabber A/TX for my 2021, it'll be a while before I actually have them, and a quick check of the website shows tread depth as 14 with no unit specified, if that is 14mm, then I would need to recalibrate between tire changes - good thing my car doesn't have EAB.