OP, offset is the distance between the middle of the wheel and the hub mounting surface.
The more negative the offset, the more the wheel will "poke" out towards the fender.
If your OEM wheel is 18x8 +50, that means 18" diameter, 8" width and +50mm offset.
The wheels you are looking at are...
I have for sale a pair Upper Console ("boomerang") trim wrapped in black alcantara with red stitching.
Reason or selling is that I have a leather steering wheel and shift boot+knob, so I think these would go better in a 20-21 CTR with the suede steering wheel and shift boot.
Looking for $120...
There used to be a similar problem back with the old 3rd gen TL's. Those gearboxes were infamous for popping out of 3rd gear. Switching out to GM synchromesh MTF solved my issues with that car.
Have you swapped out the MTF yet? If not, how many miles do you have on your car?
I had both TSP Stage 1 and Phearable Stage 1.5.
Both were pretty good, but I preferred Phearable's approach in limitting boost in 1st and 2nd gear. It makes it feel like an NA car almost, but you can still fly in 3rd and 4th.
If you like the higher boost in all 6 gears, then maybe TSP Stage...
I upgraded from the Phearable stage 1.5 tune to the Stage 1.5R tune on the day it came out (Feb 13th), so figure I'd give an update after 2 months with this tune.
Vehicle: 2019 Civic Si Sedan
Total tuned time: 10 months
Tuned miles driven: 10,000+
Tuning device(s) used: KTuner V1.2...
I know what you mean with the hyperactive steering input! After switching out to 18x9 +45 wheels w/ 255/35 summer rubber, the time between moving my steering wheel and the wheels actually turning is stupid quick. Definitely an adjustment for sure.
I also feel like I have to make more minor...
No problem. And don't be discouraged by the wheel size. 18x9.5 can fit on these cars, but you'd have to choose an offset between +38 and +45 for that width to fit properly. Fitment is a function of width and offset!