Head to head
Newmen Advanced SL R.50vsZipp 404 Firecrest
Both sections drawn to one scale, from each maker's published geometry. The differences you can see in the drawing are the differences that exist.
vs
Fig. — rim sections, one scale
Newmen Advanced SL R.50Zipp 404 Firecrest
- Depth
- 8 mm apart
- 50 vs 58 mm
- External
- 2.5 mm apart
- 30 vs 27.5 mm
- Internal
- 1 mm apart
- 22 vs 23 mm
- Claimed weight
- 96 g apart
- 1,420 vs 1,516 g
- UK RRP
- £100 apart
- £1,900 vs £2,000
Rim depth
50 mm
58 mm
8 mm apart. Deeper is faster on the flat; shallower is calmer in crosswind and lighter uphill. Neither is simply better.
Internal width
22 mm
23 mm
The wider rim is built around a wider tyre. Match this to the tyre you actually run, not to the bigger number.
External width
30 mm
27.5 mm
Governs how the rim and tyre meet the air, and frame clearance.
Newmen
Advanced SL R.50
RRP £1,900
UCI mass-start road
Eligible — Eligible on the rules we assess
Zipp
404 Firecrest
RRP £2,000
UCI mass-start road
Eligible — Eligible on rim height; tyre choice is restricted