Sir, that's pretty decent average considering its helluva XL shoes and I am sure 150 would have not been the actual reading, had it been detected by a speed gun cause bigger tyre/rim size changes the revolutions per min that needs to be calibrated with the speedometer to reflect the actual speed you are cruising at but I dont think it's possible.
Could you please share a pic of your ride sometime cause I am just curious to know, how it must be looking with those tyres and 17 inchers. Hope they dont put extra stress on the suspension and dont impact its aesthetic appeal from rear due to its further jacked-up b00ty:)
Sir, braking is awesome; have used ABS a few times, wont let you down in case of emergency.
BTW we have witnessed some very bad accidents of civic reborn, hope this new model is safer and stable than its predecessor.