How to clean whitewalls?

[Consigliere]

I´ve got new whitewall tires on my bike but after instalation and some few rides they are really dirty, its not white but grey now... I cleaned it with alcohol but it takes really long time and gas its not good for tires

Do you know some better way to clean it?
I really don´t like dirty white...

 

[buzzy]

magic eraser

 

[Markm]

yep...a wet Mr. Clean (R.I.P) magic eraser...

 

[DogsBody]

I have the BOMB:
(Brand) Seapower part# SIBC16.
This stuff is the be-all, and end-all imho.
I didn't know about it until last year when a Customer asked me to get his grotty old Zodiac cleaned-up.
Went to a local Marine Supplier; and was told to use this stuff.
It works on better than anything I've seen.
I did a girl friends white walls with it; and they came out like new.
WARNING: Rinse well after cleaning. It can leave a real slippery coating unless washed right off...
Here's a link to the pdf that contains a description:
http://www.americanautoparts.com/docs/509420_738.pdf