Obviously larger diameter tires affect the braking somewhat. I have 5
vans with 15" and 16" tires that are all substantially larger than stock
diameter and yet I have all stock brakes. The key thing is they are all
86+ front brakes and I keep the full braking systems in good working
order. GOOD WORKING ORDER, that is the key. The rears are very important
in that regard, they need service.

I did recently put a larger brake booster in one of them and that made a
big difference in brake feel though it doesn't improve braking capacity.

Mark

Don Hanson wrote:
> Semi-thread jack, but
>
>     what kind of effect have you wheel swappers felt on braking?   Seems to
> me that increasing the diameter and rolling circumference of the wheels
> without increasing the brake's size...that would result in noticeable
> reduction in actual braking force...eh?   I know the effect is dramatic
> when done the other way....increase the brake disc's diameter and the
> braking forces are enhanced...
>    Curious, because Vanagons are  somewhat under equipped with brakes from
> the factory
>
>
>