What is too thick or too big of tires/wheels? are 19 X 9 front and rear too wide? Would it make turning more difficult? Thanks

 

19x9 is definitely a good size for the rear. 19x9 might be right at the limit for the front, but I think you'll be ok. You could run 245/35 & 275/35 without a problem. What are the offsets of the wheels?

 

I have heard people here say that the steering is a bit heavier with the wider tires up front, but nothing that they were concerned about. Most people do use a staggered setup though, even though using equal width tires may help with the understeer.

 

I know quite a few people running 9.5 on the front w/ 10.5 on the rear. This setup requires you to roll the rear fenders but I don't believe there is any problem with the fronts- you should be fine running 9 on the front.