Replace rear tires only?

[wabbajack]

I'd like to get some input from other Genesis 5.0 (or RWD variant) owners on what the best practice is for replacing their rear tires.
My rear tires need to be replaced, and I've ordered a pair of BF Goodrich G-FORCE COMP-2 A/S for the rears from Costco. The front tires are Continental CONTIPROCONTACT with little over 50% tread life. I don't know if I should also order matching BFGs for the front. Internet has conflicting advice - most recommend making sure all tires are same brand/size, but when I try to filter it down to factory staggered sizes, it gets much less helpful.

Figured I'd ask here since it's much more applicable for my situation.

P.S. Tire Rack says the BFGs are Performance, while the Conti's are Grand Touring. Is there an issue with mixing the classes of tires?

 

[carguy75]

You should always use matching tires even if you have a staggered tire/wheel setup. It is not a good ideal to use mismatch tires with different tread patterns.

I notice many used car dealerships use mismatch tires on used luxury cars with expensive tires and I have walked away from cars that were being sold with tires like that. If the used car dealership could not afford to replace the proper tires; what else is wrong with the car that they glaze over?

 

[celltech]

The rears on my 2015 5.0 are wearing twice the rate as my fronts. I will be replacing only the rears first when it's time.

Other than being ugly I would not worry about matching fronts, unless you drive it really hard and end up with unpredictable handling at the limit.