I'm planning to change my oem wheels (Mazda CX-7) to 20" rims and tires, after making computations 255/45R20 would be about 0.6% bigger than my 215/70R17 originals.. need advise lang sana.. after going to a couple of shops one taiwan made rims that caught my eye.. problem lang is they only have maxtrek fortis tires available..

Couple of questions lang:
1. Although the size is only 0.6% bigger in diameter, the wheels are bigger than the recommended 245/45R20 .. ok lang kaya ito?

2. Ok ba taiwan made rims?

3. Ok ba yung maxtrek fortis tires brand?

4. Since medyo apprehensive ako about using Chinese made tires another option is just getting tires from other shops bring them to the rim shop and have them fitted and installed to my car there nalang.. can you give suggestions on what brand I should use na di naman sobrang mahal.. will generally be driving sa slex everyday so of course am thinking about safety..

5. Suggestions on what shOps to buy from? Am generally in the south area of Metro Manila so OK sana if there Hut if good deal sa iba puwede ko naman dayuhin..

TIA guys