2005 ford focus juddering sensation

[Arbo1970]

Hi guys, been a long time since I was on here last.
The other day I hit a massive pothole in my 2005 ford focus, 1.6 Ghia.
Blew my tire which I had change and since then it’s developed a problem when driving under load in 3rd to 5th gear it feels like it suddenly loses power and judders then starts again. Like a misfire.
I’ve just replaced the ignition coil for new, same problem no difference.

Any ideas????? Was perfect before the pothole. Annoying!!!!

TIA

Kev