Goes to show you haven't done any heavy lifting yet Doug LOL!

Youll need an importer code for anything over $1000. Which is almost anything tasty on a 911 these days i should think (wheels, rubber, spoilers, seats, suspension, brakes etc etc etc).

 

I think you can do that up to $1,000 or something similar. X post

 

Ok, you're right on the heavy lifting although I have 4x Michelin Pilot Sports arriving next week for the boxster via Graeme's mates raising funds for their rowing club. Being cleared via Mainfreight so all round less hassle. Wish I'd ordered a few rotors at the same time. Freight was only US$5 per square foot plus donation.

ChrisM is bringing me back some new toys in his bags :-)

 

As others have said yes to importer code although I arranged mine on tyre arrival.

For Tire Rack; if you plan on using a credit card they will need to validate your billing address. I found it a bit of a chore talking the banks customer service rep and then team manager into confirming my details directly with the Tire Rack rep. Is a once off so figured it was worth the 30 mins for the likelihood I order again and the air points

 

Doug
Your gear can't be far away. my stuff has been uplifted from Mainfreight depot in wellington this morning - just in time to mount tyres and head to Targa sunday

 

Hm I've got stuff from the US couple of times over $1000. Never needed an importer code. The shipping company looked after that and invoiced me for the GST and duty etc

 

Thanks for the info guys.

Does anyone have any advice on the different rolling diameters? I have found another 225 option in 225/45 which married the RPM up better. I guess it is inescapable if I'm going for the one 285 option listed I should match the rolling diameter up front so the profiles are the same?

275/35/18 9-11" (9.5") 814RPM
285/35/18 9.5-11" (10") 804RPM

225/40/18 7.5-9" (8") 829RPM - have option of 88Y and 91Y
225/45/18 7-8.5" (7.5") 802RPM
235/40/18 8-9.5 (8.5") 819RPM

Slightly embarrassed by ignorance in these matters...

 

For two-wheel drive cars, the general rule is to keep the rolling diameters within 5% to avoid issues with ABS.

Looking at the factory options, the 17"s had RPMs of 830/840 (1.2%) or 828/831 (0.4%), and then 18"s had RPMs of 829/822 (-0.9%). Lowest load ratings of 89Y on the front and 94Y on the rear. The load ratings for the Pilot Super Sports seem to be a step higher for the same size tyres than older tyres.

225/45 and 285/35 are taller than factory, so your ride height (and geometry affected by that) will be a bit off, but at least retains similar rake.

What width and offset are your 18" wheels?

 

Jason.

I went with the 235/40-275/35 combo with my last order of MPSS for the 993. The rolling radius/rpm was actually only 5rpm different and closer than the factory specified 225/265 18" combination for my car. The sidewalls at the front are fractionally higher than the stock 225 (4 mm?) so visually little difference and in terms of rake perhaps only a few mm higher at the front. The factory did specify the 225-40/285-35 combo you have above for the C2/4S and Turbo and even those have a difference of 25rpm thats still under 3% which was deemed fine for the 4WD chassis so I think you are safe to cheery pick any of those combinations you have mentioned. If your front rim is 8" any of those combs will work fine but if 7.5 then youll probably be best with a 225...

 

CCS are getting right in behind the 20th Anniversary Targa Tour this year. Looks like we will have some RSG contingent waving our flag (Ron/Patsy, Steve/Barbara and Richard/Doug). Gonna be an absolute blast and probably the only event this year Im sore to have missed. Lets hope they can keep those Caymans on the black stuff this time....

http://www.nzherald.co.nz/cars/news/...ectid=11345228

Not sure who on here is planning on participating in the May Targa NI event? Im a definite this time around (planned my travels around it!) and Im hoping Doug will be a starter in the Boxster. It would be great to have a small group of us out there again....

 

Thanks Matt, Macca. Rims are 10J ET61 and 8.5J ET61. The apparent absence of a 285/30 MPSS is a PITA. I don't want to over gear the car or steer into rubbing issues but I like the wider rears. The taller tyre might look a bit chubby tho. Maybe I should try the Sutis. The Sport Cups come in the sizes I'm after but I'm a bit concerned by standing water issues with those.

 

Any other tyre recommends? RE11? PS2?

 

IMO the 911 has plenty of rear tyre width. If its lacking its in front grip (understeer). I should think the 235/275 combo on the 964T would work well. Your wheel diameters are perfect for this.

I went to 285 on the rear of the 993 for NITT due to lack of availability of 265 and I prefer the 265. I have been running a 235 front with the Z221 from the beginning so there were no changes there....

I have run the RE11 & PS2 and would favour the later than the former.

The MPSC (original) I would not recommend for a primarily street driven car in Auckland in winter (or anytime it rains heavily). They are no where near as good as the MPSC2 in the wet but the MPSC2 will unlikely be ever available in our 18" fitments I suspect...

 

FYI Caffeine and Classics is on this Sunday at Smales Farm

https://www.facebook.com/CaffeineAndClassics

Sadly i'm away for the long weekend. There's always the prospect of something exotic turning up

 

This probably depends on your engine power. I ran 265s on the rear of my 996T - on 10 inch rims - for a week or two when my stock rims were getting painted and it was a hoot. Loose even in the dry but not as fast nor particularly secure. OK, they were also older rubber (same on front) but since then I've decided never to pay for skinnier tyres, even though i accept that 265 winters on 10s are probably best for European/North American snow. With PSM on they probably wouldn't get loose on you but just slower as it would cut in more. Pretty sure that was still stock power before I upgraded her too. YMMV. If they fit, you're welcome to borrow that set and see how they feel on yours.

Maccas right about the underlying understeer but on a Turbo I'd only go wider up front rather than narrower out back. For now, I've just learned to trail brake it out going in, and leave margin for it coming out. JMHO.

Nice to be discussing Porsches again BTW!