225/45 R17 Winter Tyres on a 986

[MogulBoy]

These aren't 'N' rated but they are the Porsche recommended narrow option winter tyres on the 986.

Continental WinterContact TS 830P 225/45 R17 94V XL

I've been running regular profile 255/40's for the past 10 seasons but fancied a change.. They look good on the 8.5J rim to my eyes (i.e. not too stretched) but you can't disguise the fact that they are 30mm narrower per side.

Looking forward to feeling a virtual increase in HP at the rear wheels! ;-)





P.S. The comparison shot shows the PS2 N3

[temporarychicken]

A good idea, re-use the rim but fit the narrower tyre for winter,

Both the 255 summer and rhe 225 winter are within the rulebook for an 8.5j rim. Its amazing the difference 30mm makes in the photos though.

What did you do at the front?

[MogulBoy]

I do have two sets of 17" OEM rims ;-)

Up front, I am running Dunlop Wintersport M3's in the default 205/50 profile as they have at least one more seasons life left in them.

It was important for me to keep to an approved tyre sizes as the local laws and 'MOT' equivalent stipulate that you must.

Porsche list the Conti 225/45 TS830p as an approved choice for the 8.5J rears but clearly haven't come to an agrangement whereby Continental stick an N rating on them - presumably because the volumes would be miniscule.

Looking forward to some 'bad' weather now to put them through their paces!

[edh]

I have 2 sets of 8J 17" wheels with 225/45/17 track day tyres on them - used on my 944. I was wondering whether a square setup would work on the Boxster?

[thegoose]

edh said:

I have 2 sets of 8J 17" wheels with 225/45/17 track day tyres on them - used on my 944. I was wondering whether a square setup would work on the Boxster?

You could probably make it work but Hartech have got their Boxster S's handling very well on staggered tyres (265 rear, 235 front as 225 wasn't available in the Pirelli slick control tyre), and I'd suggest they should be the benchmark for track use of a road-based car.

[edh]

thegoose said:

edh said:

I have 2 sets of 8J 17" wheels with 225/45/17 track day tyres on them - used on my 944. I was wondering whether a square setup would work on the Boxster?

You could probably make it work but Hartech have got their Boxster S's handling very well on staggered tyres (265 rear, 235 front as 225 wasn't available in the Pirelli slick control tyre), and I'd suggest they should be the benchmark for track use of a road-based car.

Thanks - very useful. I'm doing my first track day in it at Silverstone next weekend - will probably use the road wheels & tyres (Falken 453, 225F, 255R). It's just had new m030 suspension fitted, getting the geo done next week. If it goes well I might retire the 944 (it's broken at the moment & could be terminal - the car is also worth a lot more in bits than it is fully working)

I don't think there should be much more to do to the Box apart from a change of pads & maybe a sump extension - do you know which one Hartech have fitted (or have they made their own?)

[MogulBoy]

The 235/265 stagger sounds great on an S chasing lap times but taking grip away from the rear can have hilarious consequences I took these shots a good few years ago but what you see is a genuine 993RS in expert hands running on two set of fronts - just for laughs. The guy managed to squeeze the spare fronts c/w second hand tyres inside the car so that he could destroy them in the morning session at insignificant cost. He then ran the rest of the day on the full width Cups and kept it all neat and tidy.

Edited by MogulBoy on Friday 8th November 11:40