Michelin front/ Pirelli rear, to match diameter. Ok?

I went thru this with my F12, 812 and Lusso.
If you 21/22 is the set up, front you can run Pzero PZ4 265/30/21. Don't mix different brands cuz the ratings are different even tho it shows the same.

 

Having different wheel size difference than stock will not put extra strain on the PTU, as by design it engages only when needed, and its clutches are always slipping anyway (due to the difference in gearing between the PTU and the gears in the rear gearbox). However, this might throw a code as the car will try to understand why there is a constant slippage between the front and rear. This might also affect the ABS as it could believe the slower spinning wheels are on the verge of blocking.
Going with different brand/model tires, especially on a sport car, is a bad idea in my opinion, and can lead to erratic behaviour of the car, especially under the rain.

 

PZ4's are very good actually, not those old Pzero's. I would like they are not far off from PS4, and definitely better than PSS.

My Lusso is currently on PZ4 265/30/21 and 315/25/22, they ride just like stock 20's. Much better than I expected.

 

I would say that the Pirellis are superior to the Michelins

 

As stated, the size is not your problem - the different tread pattern front to rear will make the car feel unstable in certain conditions (anything but dry/hot). I would not do different tread patterns from the same manufacturer or different...

Also - Michelins IMO are far superior to Pirellis (minus their snow tires).. As opposed to the last poster, for a different POV.

 

Latest test by a respected german publication. The Pirelli blitzed it: http://www.tyrereviews.co.uk/Article/2019-Auto-Bild-Sports-Car-Tyre-Test.htm

 

A few things to consider... Quite and comfort Michelin are a bit better (even in this test) - important on a GT car (f12, 812, FF, GTC4) , as well you will get around 5K more miles out of a PS4 than a PZ.... (at least in my 20 years of exotics having bounced between both tires over the years.) Don't get me wrong, I switch back and forth and try each generation of both brands (and used to even try Goodyear on occasion and Toyo a few times). Today, I have not found better overall: speed, handling, comfort, quietness, and wear characteristics better than the PS4 - as of now. Could change tomorrow, but as of now - no better.

 

The most important thing is comfort? Really? By the way the 812 is NOT a GT car.

I test my tyres on the track. I have not found a better tyre than the Pirellis. About 1 second per lap quicker than the Michelins in my hands.

 

Didn't say most important - read the post again

812 is a GT car... Really it is.. So is the F12 which it replaced (and I have one of those)

I will give the new PZ's a go on one of my cars during the next change.. as mentioned, always up to switching each generation between P and M's, as the advancements do change.. Speed is not my biggest factor as mentioned, as the amount of time on a track with my F or P cars is much less than street.. And again, longevity, comfort, quietness, etc. are all factors I look at.

 

Ferrari themselves beg to differ, classifying it as a sports car, whilst the GTC4 and Portofino are classified as GTs. Even journalists criticise the 812 for not being GT enough (comfortable, long distance cruiser), driving more like a true supercar; more sporty than the rear-mid engined Aventador for that matter.

 

I guess we are way off topic.. So will end with this..

Darn it, I have been calling the F12 and 812 GT cars which is evidently wrong then.... ;-)

"The Ferrari 812 Superfast (Type F152M) is a front mid-engine, two seat, rear-wheel-drive grand tourer"

Don't get me wrong, I believe they are as much as a sports car/supercar than any, just talking more specific classification.

 

Yes, indeed. I too will stop here, just posting one last pic.

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The confusion stems from the legacy term "GT" that Ferrari used for all its road cars, but in recent years they started to differentiate between pure GTs and super-sports cars.

 

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S.Heiligenstein Photographie

 

Do not ever ever mix tyre brands between axles. Always try to retain the homologated tyres all round, but if you must change, keep the same brand and hopefully compound front to rear. The characteristics of the compounds used can vary greatly, even within one brand of tyre and can totally destroy the balance and handling due to different characteristics.