Pffft. Especially with the wider rim for strength and big tires for cushioning, you shouldn't have any problems. I weigh 230-ish and I routinely beat on a pair of singlespeed "road" wheels from IRO that I have on my monstercross bike with some 37mm tires. I hammer those things like it's a full on rigid MTB.
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"I feel like my world was classier before I found cyclocross."
- Mandi M.