Not quite right there old son.
*235/70/16 Revs/mile: 697.0
225/70/16 Revs/mile: 710.0
*255/65/16 Revs/mile: 694.0
255/70/16 Revs/mile: 671.0
*Factory Recommended sizes
Anyone who believes that the Police and Insurance Companies will not be interested in tyres sizes - especially smaller tyre sizes - is talking out of their arse.
Any modifications to std trim will be a heaven-sent opportunity for insurers to not pay out.
Any modifications to a vehicle which has been in a serious or fatal accident will be assessed by a Police accident investigator and they will almost certainly attribute blame accordingly.
In the circumstances of a serious or fatal accident you will have trouble with 'old bill', the insurers won't pay out due to Police expert witness testimony so any damages to be paid to other vehicles OR PEOPLE, will be down to you and your pocket.
Underestimate this at your peril.