Are these the correct offsets for MY02 wheels for a NB 993?

Front 8" ET52
Rear 10" ET65

 

Yes they are.

 

exactly right. that's what I have

 

Perfect!

 

One tiny(2mm) correction
996 5spoke
8 J x 18 ET50.0 996 362 136 03
10 J x 18 ET65.0 996 362 140 03

The Speedlines used on 993RS are 8 ET52 and 10 ET65

nevertheless 8ET50 still works fine

 

Would ET55 for the fronts and ET65 for the rears work on a NB993?

 

ET55 will work for the front but your fenders will look somewhat "undefilled"...even ET50 will make it look that way (see pic below). IMHO you want to be somewhere around ET45-47 which would fill the fenders but not require rolling, so may want to add a 7-10mm spacer with the ET55 wheels.

 

To evaluate fitment the chassis, wheel width and ET all need to be specified.
8ET55 will fit as David described, it will sit in a bit but 8.5 ET55 will fit fine in front


similarly in back 10ET65 is a perfect fit for a n/b 993