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I was looking at upsizing my wheels from 18" to 19":
245/40R18, 60.0 mph to: 245/35R19 front, 59.9 mph 275/30R19 rear, 60.5 mph (BMW-recommended, available for my preferred tire model) The better match for the rear seems to be: 285/30R19 rear, 59.9 mph (not available for my preferred tire model) For proper operation of the vehicle functions: speedometer, DSC, ABS, ASC, Corner Brake Control, Dynamic Brake Control, Brake Fade Compensation, Brake Standby, Brake Drying, etc, is it critical to go with BMW specified front and rear wheel / tire sizes and code the vehicle with the correct / compatible wheel types? Vehicle coding options include wheel types: All BMW Options Is the wheel coding for the vehicle a functional technical parameter, or a non-functional inventory label? "The 5 Series brake system is supported by the comprehensive functions of Dynamic Stability Control (DSC). These include antilock braking (ABS), Automatic Stability Control (ASC), Cornering Brake Control and Dynamic Brake Control; each of these functions contributes to vehicle stability and some of them do so specifically during braking. Other braking enhancements via DSC include Brake Fade Compensation, which compensates for loss of braking power (fading) under hard or repeated brake use; Brake Standby, which snugs the brake pads up to the rotors upon sharp deceleration to reduce inherent lag time in brake application; and Brake Drying, which brings the pads to the rotors periodically during wet-weather driving to keep the brakes ready." |
Originally Posted by vkhong
(Post 1327947)
I was looking at upsizing my wheels from 18" to 19":
245/40R18, 60.0 mph to: 245/35R19 front, 59.9 mph 275/30R19 rear, 60.5 mph (BMW-recommended, available for my preferred tire model) The better match for the rear seems to be: 285/30R19 rear, 59.9 mph (not available for my preferred tire model) For proper operation of the vehicle functions: speedometer, DSC, ABS, ASC, Corner Brake Control, Dynamic Brake Control, Brake Fade Compensation, Brake Standby, Brake Drying, etc, is it critical to go with BMW specified front and rear wheel / tire sizes and code the vehicle with the correct / compatible wheel types? Vehicle coding options include wheel types: All BMW Options Is the wheel coding for the vehicle a functional technical parameter, or a non-functional inventory label? |
Yes, it is mandatory at the time of installation and when iDrive reports tire wear too. OH ... very very important ... only BMW air should be used to inflate the tires :doh:
Seriously, where did you find that information? I suppose if the rolling radius of installed wheels was changed drastically I suppose it might be possible to code and correct' the speedometer so that it reports your speed more accurately. |
Link to best source of BMW approved air?
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Originally Posted by mookish
(Post 1331159)
Link to best source of BMW approved air?
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