FLT951

The rears will work 255/40/17.
Can I use the 225/45/17s on the front or my 99 986?
great opportunity. virtually brand new high end tires.

Schnell Gelb

check the date code on the tires before you fit them to rims?

lowpue

Rears are correct size if you have 17" wheels
Fronts you need to check on using this tire calculator. This is what I use all the time.
http://www.discounttire.com/learn/tire-size-calculator

FLT951

I appreciate advise and charts and anything helpful. In this case I am looking only for this info.
Can I use a 225/45/17 tire on a stock 17" 986 rim on a stock 986 and have no residual problems?

HoBoJoe

We run 235s on the fronts in SPB, 255s with a rear wheel up there. I don't see why a 225 won't fit on a stock setup.

steved0x

I run 225/45/17 on the front OEM 986 Boxster 7x17 wheels no problem, I have some on there right now I like it a lot better than the stock 205/50/17 fronts which were understeer city.

2RedPorsche

That size will work for sure and as steve0x says it looks better then the skinny 205s! I ran that exact size combo for 5yrs before changing to 18" wheels.
As suggested though, check all your date codes to be sure they're not old tires.

FLT951

Thank you. They are now on the car and doing nicely. I appreciate your help. Not on this car BTW.