295/30r19 OK in the rear with 245/40r19 fronts?

[Phaddi_inc]

I got a nail in my side wall on the rear tire that cant be repaired they say...I want to replace both rears as they are down to 40-50% anyway. I can get a really good deal on a slightly used set of 295/30r19 from a friend (bridgestone RE050a, same tire as stock sport wheels). Would I be ok running these in the rear with my 245/40r19's in the front (dont want to replace those as they are still 70+%). Reason im asking is because the overall diameter of the 295/30 will be about .7" smaller than the stock 275/35. If my front and rears are revolving at slightly different rates will that affect the vehicles operation in anyway?

Any advice or insight would be greatly appreciated guys, especially if someone out there is already running this setup...

Thanks
phaddi_inc