My New To Me 1998 Explorer XLT 4WD

[bilzy7]

So I got an explorer so I could take my wife, son, and soon to be born daughter places after my rangers tranny went.
It has 118,7xx miles on it now, I paid $2,200.00 for it. Previous owner flashed the check engine light; so I thought there were no problems. Turns out p0304(misfire cyl 4) was a bad spark plug. I went to put new ones in and found out owner probably NEVER changed them. The wires took so much strength to take off, and the plugs were rusted. Once new Motorcraft plugs were put in; it came back to life. I obviously put a new coil pack and wires, changed oil to castrol syntec 5w30(my ranger needed 10w30 or engine would tick). It also threw a slow response from bank 2 sensor 1 or something, p0153. I changed plugs and it hasn't said that since so maybe it just needed plugs, well find out as I've gone 275 miles and no CEL yet.
Curious as this is my first explorer. It looks like my 265/75/16 BFGoodrich A/T's may have a bit of trouble fitting. Anyone else lucky enough to not have to crank torsion bars and put on warrior 153 shackles to fit 31.5 inch tires? Wonder if I'll have to... I hate junking the ranger but I have to.

 

[adsm08]

Did the old plugs have the green dot on the top?

 

[bilzy7]

Hmm... I didn't look. They were same ones I put in, motorcraft platinum. I can take a pic cause I still got em. Green dot would identify them as from factory? The gap on the plugs; almost twice what the ones I put in were; .054. SP500 model number.