Schmolke TLO 50 vs Princeton Peak 4550 Evolution II: 260g Lighter and $1,504 Less

Princeton CarbonWorks has substantially improved the Peak 4550 Evolution II. The new wheelset is around 200g lighter than its predecessor, gains a wider 22mm internal rim and weighs as little as 1,200g with Tactic Racing TR01 V2 hubs.

That would be an impressive result in most premium wheel comparisons.

Against the Schmolke TLO 50, it is still not close.

The TLO 50 with Extralite hubs weighs approximately 940g and is priced at $5,995. The lightest Princeton build uses Tactic Racing TR01 V2 hubs, weighs 1,200g and is priced at $7,499.

Schmolke TLO 50 vs Princeton Peak 4550 Evolution II

This is the cleanest price-and-weight comparison because it matches the 940g Schmolke claim to the $5,995 Extralite build and the 1,200g Princeton claim to the $7,499 Tactic TR01 V2 build.

What happens with DT Swiss 180 hubs?

Both manufacturers also publish weights for DT Swiss 180 builds, allowing a genuine like-for-like weight comparison without mixing hub configurations.

The TLO 50 remains 245g lighter when both wheelsets use DT Swiss 180 hubs. The $5,375 Schmolke price belongs specifically to this approximately 1,025g DT Swiss 180 configuration.

No price claim has been made for the Princeton DT Swiss 180 build because the listed Princeton options at the time of comparison were the DT Swiss 240 and Tactic TR01 V2 configurations.

The construction comparison

Where does the 260g difference come from?

Princeton has reduced each Peak Evolution II rim to a claimed 390g. Schmolke’s 50mm rim weighs approximately 315g.

That is around 75g less per rim, producing approximately 150g of the difference before the hubs and spokes are considered. Importantly, that saving is concentrated at the rim, where reducing rotating mass has the greatest effect on how quickly the wheels accelerate and respond.

The TLO 50 then adds carbon spokes. Princeton uses conventional Alpina Hyperlite steel spokes.

Does Princeton’s undulating profile make it faster?

The Peak 4550 Evolution II uses Princeton’s distinctive variable-depth rim, alternating between approximately 45mm and 50mm. It gives the wheelset an unmistakable appearance and is designed to balance aerodynamics with stable handling.

The TLO 50 uses a consistent 50mm U-shaped profile with a 32.5mm external width. Schmolke developed it around wider road tyres, including a recommended 29mm front and 32mm rear performance setup.

There is no directly comparable independent wind-tunnel test demonstrating that the Peak Evolution II is faster than the current TLO 50. Its unusual shape is visually obvious, but that does not establish an aerodynamic advantage over Schmolke.

What can be compared directly is weight, depth and width. The TLO 50 provides the full 50mm depth, a wider tyre platform and a 260g lower wheelset weight.

Is 25mm internal width better than 22mm?

Princeton has increased the Peak’s internal width to 22mm. That brings it closer to current road-wheel design, but the TLO 50 is still 3mm wider internally.

The Schmolke’s 25mm internal platform provides greater support for modern 29–32mm tyres and creates a broader tyre profile. That allows riders to take advantage of lower pressures, grip and comfort without sacrificing a full 50mm performance rim.

Schmolke has not achieved its 940g weight by making the TLO 50 shallow or narrow. It is both substantially lighter and more progressive in its dimensions.

What does the Princeton Peak 4550 Evolution II do well?

Princeton has made several meaningful improvements to the second-generation Peak:

If the undulating Princeton profile is the feature you want above everything else, the Peak delivers it in a lighter and more modern package than the original version.

If the objective is to build the lightest high-performance bike, the comparison returns to the numbers.

Does Princeton deliver more for the money?

The fairest direct price comparison is between the lightest available builds.

The 940g TLO 50 uses Extralite SPD3+ hubs and costs $5,995. The 1,200g Princeton uses Tactic Racing TR01 V2 hubs and costs $7,499.

Schmolke therefore removes 260g while saving $1,504.

Which wheelset should you choose?

Choose the Princeton Peak 4550 Evolution II if its wave-shaped profile, hole-less rim bed and range of finishes are the features you value most.

Choose the Schmolke TLO 50 if outright wheelset performance is the priority.

Princeton has moved the Peak closer to the front of the premium wheel market.

Schmolke remains well ahead of it.