Recalibrate speedometer

Is there a way to get the speedometer on my 2016 SR5 recalibrated to account for my 285's larger diameter. On my last truck, a full size Gmc, I was able to buy an ECM programmer that let me adjust my speedometer. I've been told by the dealer that they are not allowed to change the programming on Toyota's. I'm a bit OCD and it drives me nuts having my speedo saying 70mph when I know I'm actually going 75mph.

 

I beleive our only option right now is the hypertech inline version.

 

Hypertech makes a behind the cluster piece.

Don't know if they have one that is 3rd gen specific or not, but that's where to look.

If not liking speedo error aggravates ones OCD, why make a tire swap that sets that off?

That's like someone who has ulcers eating hot chili.

 

Let's just hope @OVTune can incorporate this in his ECU tune