Have you ever try foams tires ? Give it a try and you will appreciate it. Here is why :
1. No gluing -- c.a glue sux
2. More grip : for singapore climate 37 shore and 40 shore or combination.
3. definetely last longer than rubber.
BTW...... do you know how long is final with rubber tires ? With foam tires I have 45 - 60 minutes Finals.