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Measure your inseam from crotch (straddle a book spine and press up) to ground standing in your cycling shoes, this is your minimum clearance. Then, select a road bike size with a standover measurement that is at least 1 to 2 inches less than your minimum clearance.
Size
|
50
|
53 |
55 |
58 |
61 |
|
|
HT ANGLE
|
72
|
72 |
72.5 |
73 |
73.5 |
|
|
ST ANGLE
|
74.5
|
74 |
73.5
|
73
|
73
|
|
|
TT LENGTH
|
525 |
535 |
550 |
570
|
590 |
|
|
BB DROP
|
70
|
70
|
70
|
70
|
70
|
|
|
CHAIN STAY
|
406 |
406 |
406 |
406 |
406 |
|
|
WHEELBASE
|
972
|
979 |
985 |
996 |
1011 |
|
|
FORK RAKE
|
45
|
45
|
45
|
45
|
43
|
|
|
STANDOVER
|
738 (29.06")
|
750 (29.53")
|
768 (30.24")
|
782 (30.78")
|
794 (31.25") |
|
|
best
way to pick size; get a frame you can clear the standover measurement by 1 to 2 inches
Doublecheck your fit against the specific model geometry prior to ordering
Size down if you have a short upper body/arms or for more aggressive riding style or lower handlebars
Size up if you have long upper body/arms or if you simply prefer a larger bike in general (and don't need the straddle clearance) or you desire higher handlebars
These are general guidelines
Your Personal preferences should determine your size choice - it is up to you.
Thanks for Saving with Bikesdirect.com, enjoy your ride.