Road bike frame for offroad/cx wheels I'll be moving in the near future from a wide open rural area with open, expansive country roads to a more suburban area with traffic issues but a few offroad trails available for riding. My question -- and probably a silly one -- is: is it at all recommended to outfit a separate set of wheels with CX tires for my road frame for trail riding at a fraction of the cost of a new CX bike or am I putting my road frame at unnecessary risk trying to save some money?

I'm not imagining I'm going to be getting into legit mountain biking (just yet) and only ride for personal fitness and the enjoyment of it.  I've seen threads here asking the opposite (CX for Road), but nothing this way.

Thanks!
Personally, if your road frame is an out-and-out road bike - I would say you will be faced with several issues.


strength of your frame


Not only will this stress your frame - it may also fatigue the frame. And may cause sudden and catastrophic failure.


tyre clearance


Most road frames will not take a tyre greater than 28mm. Some no more than 25mm.


comfort


The seating position and reach could be altered to make more comfortable - but it will always be a compromise.


Geometry


Road bikes have different geometry to CX bikes. Lower bottom bracket offers lower clearance, steeper head angle makes the ride more twitchy.