Some weird analysis -
Using a standard 32mm wide wheel, the measurement from outer wheel to outer wheel on 8.75 trucks is 8.43. On 149's it's 8.18. This leads to me to believe that 159/151's are better suited for 8.5 boards.
Will report back with my findings in 9 months after ACL rehab.....
I've been thinking about this too. With Aces you get more axle thread showing than with other trucks, so even though the 44s are 8.38" wide, the wheels would be flush probably on an 8" or something.
Actually did some measurements after typing that out and Ace 44s with Spitfire Conical, Conical Full, Classic Full & Radial Slims all come down 8" wide from outside of the wheel to outside of the wheel on the other side. On 55s that'd be 8.625" if they're 9" wide. I didn't measure my 55s as they have wide ass cruiser wheels on them. This really goes to show that trucks are weird and Aces maybe even more so. I'd be down with an Ace 50 that'd be somewhere between the 44 and 55.
Then again what is that we want? Is it better to have the outside of your wheels or the axles flush with the edge of your board? Is the wheel design where the nut and axle extend far over the edge of the wheel optimal in any way or is it just something we've kinda ended up with and stuck with? 🤔
I'd also like to wish you a nice recovery! It'll take its time and at least I delved deep into gear nerdery when I couldn't skate for 6+ months after breaking my leg. But it was what kept me stoked on skating and I'm fine with that.