Can the same rider take different sizes on these two bikes?

Yes. Frame labels are not standardized, so the same rider may need different sizes. This comparison deliberately avoids a generic matched-size answer and hands your measurements to Bike Fit instead.

Which frame has the higher front: Specialized Tarmac SL9 or Wilier Granturismo SLR?

Across matched sizes, the frame fronts of Specialized Tarmac SL9 and Wilier Granturismo SLR differ by only a few millimetres. Stem and spacer choices will have more effect on handlebar position.

Specialized Tarmac SL9 vs Wilier Granturismo SLR: which bike is right for you?

Compare ride character, intended rider, geometry, and fit. Add your measurements to see which bike suits you better and which size to choose on each.

Fit verdict: the frame positions differ enough to matter. Compare the geometry below, then use your measurements to identify the safer size and setup.

Compare them for me Compare geometry and sizes

In one look

Specialized Tarmac SL9: race geometry. Wilier Granturismo SLR: endurance geometry.

Across matched sizes, the frame fronts of Specialized Tarmac SL9 and Wilier Granturismo SLR differ by only a few millimetres. Stem and spacer choices will have more effect on handlebar position.
The frame front of Wilier Granturismo SLR is about 11 mm shorter. Handlebar position also depends on the stem and spacers.

These two split on bottom bracket; the sourced values are below. What each difference means for your size, your setup and the riding you describe is in the full comparison.

Bottom bracketDiffersSource 1 Source 2
Specialized Tarmac SL9
Threaded
Wilier Granturismo SLR
Press fit
A threaded bottom bracket is simpler to service and less prone to creaking; press fit saves weight and allows a wider shell.
Price
Specialized Tarmac SL9 is the dearer of the two, going by the cheapest build you can buy of each; Wilier Granturismo SLR starts lower.

Subjective findings from independent tests on stock or near-stock builds. Tyres, pressure and size change how a frame feels.

We compare differences at frame and model level. Components, current price, and availability depend on the exact build and seller.

2026 • race geometry: Specialized Tarmac SL9; Size guide and geometry for the Specialized Tarmac SL9
2026 • endurance geometry: Wilier Granturismo SLR; Size guide and geometry for the Wilier Granturismo SLR

What do you need from this comparison?

Start with the decision you are making. We will ask only for the details needed to answer it.

Step 1/1

What are you trying to understand?

Your answer decides which questions follow and what the result focuses on.

Fit and size differences

Geometry can separate these bikes: matched sizes create a meaningfully different position.

Typical difference across matched sizes: frame front height 2 mm, forward length 11 mm.

For a personal answer, the fit-and-size path uses your measurements to show only the relevant frame sizes. The full chart remains available as a reference.

View geometry for every size

How do Specialized Tarmac SL9 and Wilier Granturismo SLR sizes compare?

See the closest size matches and the differences in stack, reach, and riding position.

Specialized Tarmac SL9: 44; Stack 501, Reach 366
Wilier Granturismo SLR: XS; Stack 527, Reach 369

Stack: 26 mm taller

Reach: 3 mm longer

Specialized Tarmac SL9: 49; Stack 514, Reach 375
Wilier Granturismo SLR: XS; Stack 527, Reach 369

Stack: 13 mm taller

Reach: 6 mm shorter

Specialized Tarmac SL9: 52; Stack 527, Reach 380
Wilier Granturismo SLR: XS; Stack 527, Reach 369

Stack: practically identical

Reach: 11 mm shorter

Specialized Tarmac SL9: 54; Stack 544, Reach 384
Wilier Granturismo SLR: S; Stack 546, Reach 374

Stack: practically identical

Reach: 10 mm shorter

Specialized Tarmac SL9: 56; Stack 565, Reach 395
Wilier Granturismo SLR: M; Stack 566, Reach 379

Stack: practically identical

Reach: 16 mm shorter

Specialized Tarmac SL9: 58; Stack 591, Reach 402
Wilier Granturismo SLR: L; Stack 586, Reach 384

Stack: 5 mm lower

Reach: 18 mm shorter

Specialized Tarmac SL9: 61; Stack 612, Reach 408
Wilier Granturismo SLR: XXL; Stack 625, Reach 395

Stack: 13 mm taller

Reach: 13 mm shorter

Specialized Tarmac SL9	Wilier Granturismo SLR	The position will feel
44Stack 501 · Reach 366	XSStack 527 · Reach 369	Stack: 26 mm taller · Reach: 3 mm longer
49Stack 514 · Reach 375	XSStack 527 · Reach 369	Stack: 13 mm taller · Reach: 6 mm shorter
52Stack 527 · Reach 380	XSStack 527 · Reach 369	Stack: practically identical · Reach: 11 mm shorter
54Stack 544 · Reach 384	SStack 546 · Reach 374	Stack: practically identical · Reach: 10 mm shorter
56Stack 565 · Reach 395	MStack 566 · Reach 379	Stack: practically identical · Reach: 16 mm shorter
58Stack 591 · Reach 402	LStack 586 · Reach 384	Stack: 5 mm lower · Reach: 18 mm shorter
61Stack 612 · Reach 408	XXLStack 625 · Reach 395	Stack: 13 mm taller · Reach: 13 mm shorter

The same size label can create a different position on each frame. Stack and reach are one part of the decision; the personalized comparison connects them to your body and each bike’s ride character.

FAQ

Can the same rider take different sizes on these two bikes?: Yes. Frame labels are not standardized, so the same rider may need different sizes. This comparison deliberately avoids a generic matched-size answer and hands your measurements to Bike Fit instead.
Which frame has the higher front: Specialized Tarmac SL9 or Wilier Granturismo SLR?: Across matched sizes, the frame fronts of Specialized Tarmac SL9 and Wilier Granturismo SLR differ by only a few millimetres. Stem and spacer choices will have more effect on handlebar position.

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