Head to head
Vision Metron 45 SLvsZipp 303 S
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
Vision Metron 45 SLZipp 303 S
- Depth
- Identical
- 45 vs 45 mm
- External
- 1.5 mm apart
- 28.5 vs 27 mm
- Internal
- 2 mm apart
- 21 vs 23 mm
- Claimed weight
- 21 g apart
- 1,519 vs 1,540 g
- UK RRP
- £600 apart
- £1,600 vs £1,000
Rim depth
45 mm
45 mm
Effectively the same depth — this is not the axis to choose on.
Internal width
21 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
28.5 mm
27 mm
Governs how the rim and tyre meet the air, and frame clearance.
Vision
Metron 45 SL
RRP £1,600
UCI mass-start road
Eligible — Eligible on the rules we assess
Zipp
303 S
RRP £1,000
UCI mass-start road
Eligible — Eligible on rim height; tyre choice is restricted