Taller gears or bigger wheel?

[Ivan]

I am strongly considering getting some longer legs for my XS.

I have a 17 inch rim from a standard (presumably) which would give a taller ratio. It looks to be a fairly straight forward swap.

Also considering the final drive swap from a 750. I have seen some go for very decent prices, so it shouldn't be that big of a deal.

My question is, which would be better? What kind of difference is there between the 1100 and 750 gears?

As a reference, I am just shy of 5000 rpm at 75 mph. What can I expect as a difference with the 750 gears?

[Crazcnuk]

About 300rpm less.

Although it doesn't sound like much, most who have done the swap claim it made thier bikes completely different...

If I was you, I'd do both. I already have the 17" rear wheel, and my 750FD is in the shed, waiting for install.

[red bandit]

I already had the 17" wheel on my standard. When I swapped to the 750 drive it dropped my rpm 600 at 75. At 100mph it dropped about 800.