My ride FL 318 previously on 17' BMW original rims. Recently change to original 17" AC rims. After the change, feel that the car is lighter and the suspension is too soft. Understand from the Service Advisor that need to change to AC suspension. Does you guys can verify and have any experience on that?
Suspension
- Thread starter henry
- Start date
centurion
Well-Known Member
Re: Suspension
If the car feels lighter, your rims must be WAY lighter than the originals. Every pound saved on the unsprung weight of the wheel, should feel like 10 pounds lighter for the car. This is because of a combination of the flattering effects of decreasing rotational inertia and also better suspension compliance since the up-down inertia of the lighter wheels is less.
To my knowledge, YOU DO NOT NEED to uprate your suspension if you have lighter rims. If you have heavier rims, you may need to increase the spring rates, and as a result, your dampers also. But the situation now is a good one. You feel everything is better.
As for the `too soft' feeling, it's just better suspension compliance, resulting in more comfort. Review the feeling.
If the car feels lighter, your rims must be WAY lighter than the originals. Every pound saved on the unsprung weight of the wheel, should feel like 10 pounds lighter for the car. This is because of a combination of the flattering effects of decreasing rotational inertia and also better suspension compliance since the up-down inertia of the lighter wheels is less.
To my knowledge, YOU DO NOT NEED to uprate your suspension if you have lighter rims. If you have heavier rims, you may need to increase the spring rates, and as a result, your dampers also. But the situation now is a good one. You feel everything is better.
As for the `too soft' feeling, it's just better suspension compliance, resulting in more comfort. Review the feeling.
pm me
Re: Suspension
Your service advisor seems to be wanting you to pay for his next month's car installament...
That is a big load of bull.
henry;186671 said:
Your service advisor seems to be wanting you to pay for his next month's car installament...
That is a big load of bull.
Re: Suspension
Guys, thanks for your comment. But just that the car is not so stable using the AC rims comparing previously. The suspension is too soft when riding at high speed and worst if going over uneven road or sharp bend. Should I change to the stiffer suspension or remain using the stock type?
Guys, thanks for your comment. But just that the car is not so stable using the AC rims comparing previously. The suspension is too soft when riding at high speed and worst if going over uneven road or sharp bend. Should I change to the stiffer suspension or remain using the stock type?
