Pros and Cons in changing from 20" to 21" rims

[filippos]

I am thinking in upgrading from 20" rims to 21" feric grey! Are there any pros and cons I should now about??

eg. Is it true that 21" highers the consumption? Or that 20" is faster than 21" when speeding??

thanks,

any information would be helpful!

[jeep]

The lighter the wheel better the fuel economy. So if the 21"weels+tire is less in weight than the 20" you will get better fuel economy.

I am not sure if the speed will change because you will probably compensate for the increased wheel diameter with a tire with lower profile. Technically, if the wheel+tire diameter is bigger then the speed will be higher (your speedo and odometer will be shot though and will show lower speed and distance respectively)

[rayxi]

Pros:

• It may look better

Cons:

• cost more for wheels
• cost more for tires
• tire size availability (fewer choices)
• likely to be heavier
• more susceptible to road hazards
• ride quality may be affected
• rolling diameter may be different
• harder to balance
• it may look worse

[filippos]

thank you guys!
I ll think of it, although I love the way the feric gray 21" look on other x5 I've seen in this forum.

What worries me most is as correctly stated :

• more susceptible to road hazards

[LeMansX5]

Originally Posted by filippos

thank you guys!
I ll think of it, although I love the way the feric gray 21" look on other x5 I've seen in this forum.

What worries me most is as correctly stated :

• more susceptible to road hazards

That depends on what kind of roads you drive on. If your drive on smooth paved roads, you should be fine.

[juicer]

Originally Posted by filippos

thank you guys!
I ll think of it, although I love the way the feric gray 21" look on other x5 I've seen in this forum.

What worries me most is as correctly stated :

• more susceptible to road hazards

I have the 21" ferric greys and i love the way they ride, look and handle.
No issues with rubber either, and as long as u have fitted by BMW, your instruments will be set to reflect true speed etc.

get them and stop being an average joe!

[jimsaq]

the jump from 20 to 21 is more negligible than 18 to 20
I had 20's on mine when I took delivery, changed them to 21's about 2 weeks later. love them but have only put 15,000k's on them so far