I got a 30mm V Radial Silver, with a Quango Hub from Varno, it's awesome. For braking, I changed brake pads to Shimano Ultegra Dual pivot Blocks, they work an absolute treat, no squeal, no surface rubbing, and good stopping reaction...... pricey at 11 quid a pair, but, it's a small price for safety....... thought it was worth the mention.
mtuts - the 30mm are machined, the 40mm are not machined.
You can run the 40mm with a brake, but it is not ideal and may squeal until the black finish has been worn down.
I got a 30mm V Radial Silver, with a Quango Hub from Varno, it's awesome. For braking, I changed brake pads to Shimano Ultegra Dual pivot Blocks, they work an absolute treat, no squeal, no surface rubbing, and good stopping reaction...... pricey at 11 quid a pair, but, it's a small price for safety....... thought it was worth the mention.