2022 tyre option for Cerbera 16inch wheels

2022 tyre option for Cerbera 16inch wheels

Author
Discussion

LLantrisant

Original Poster:

813 posts

139 months

Sunday 31st July
quotequote all
I need to replace the tyres on my car as they extremely old....the bridgestone potenza speed-rating fom that period (ZR) is meanwhile aged /obsolete

front 225/45 R16, rear 245/45 R16

all tyres i can find have speed-index "W" (up to 270km/h / 168mph)...the Cerb has a max-speed of 184mph/ 296km/h, so needs speed-index Y...but i cannot find tyres in above size with speed-index Y.

i dont want to open a discussion "why you need Y?"...i need it for a certain reason.


Jhonno

4,400 posts

121 months

Monday 1st August
quotequote all
Good luck.. Might be worth looking for similar sizes and a square setup.

Oldwolf

723 posts

173 months

Monday 1st August
quotequote all
I struggled with tyres for the Chim and ended up with Pirrelli P Zero Rosso 245/45/16 94y

DCerebrate

316 posts

90 months

Monday 1st August
quotequote all
Quick survey of mytyres site reveals no 225/45 16s with the required speeds rating. For 245/45’s there is Pirelli at ‘only’ £298 and a Michelin at £302. Time to switch to 17in wheels or 18in Spiders?

Jhonno

4,400 posts

121 months

Tuesday 2nd August
quotequote all
https://www.protyre.co.uk/tyres/car-tyres/pirelli/...

Cheaper to buy 17's and put tyres on them!

LLantrisant

Original Poster:

813 posts

139 months

Friday 5th August
quotequote all
i can only find Pirelli for the front (over 400,-€ per tyre) and Pirelli or Michelin for the rears, 270 or 370,-€ per piece

as the car needs to remain original...incl. its original wheels i have to find a different solution....

jstx

6 posts

1 month

Friday 5th August
quotequote all
LLantrisant said:
I need to replace the tyres on my car as they extremely old....the bridgestone potenza speed-rating fom that period (ZR) is meanwhile aged /obsolete

front 225/45 R16, rear 245/45 R16

all tyres i can find have speed-index "W" (up to 270km/h / 168mph)...the Cerb has a max-speed of 184mph/ 296km/h, so needs speed-index Y...but i cannot find tyres in above size with speed-index Y.

i dont want to open a discussion "why you need Y?"...i need it for a certain reason.
For the street, there's the YOKOHAMA ADVAN A052 and not much else. TOYO PROXES R888R are for the track and both are W speed rated to 168mph.


RUSSELLM

5,964 posts

227 months

Friday 5th August
quotequote all
LLantrisant said:
I need to replace the tyres on my car as they extremely old....the bridgestone potenza speed-rating fom that period (ZR) is meanwhile aged /obsolete

front 225/45 R16, rear 245/45 R16

all tyres i can find have speed-index "W" (up to 270km/h / 168mph)...the Cerb has a max-speed of 184mph/ 296km/h, so needs speed-index Y...but i cannot find tyres in above size with speed-index Y.

i dont want to open a discussion "why you need Y?"...i need it for a certain reason.
Are those tyre sizes from your owners manual ?

I think my manual states 235/50 R16 for the rears. From my experience, that won't make your search much/any easier.


DuncanM

5,036 posts

259 months

Friday 5th August
quotequote all
I had to move to 17 inch wheels due to this problem.

You could buy W rated tyres though, and just don't exceed 168mph?

Nankang AS2 for ~100

LLantrisant

Original Poster:

813 posts

139 months

Saturday 6th August
quotequote all
DuncanM said:
I had to move to 17 inch wheels due to this problem.

You could buy W rated tyres though, and just don't exceed 168mph?

Nankang AS2 for ~100
the problem is that the car is in process for homologation outside UK...and the local paperwork of the car will also state the max-speed...which is around 300km/h..so, unless the approval-engineer cannot be convinced to "reduce" the max-speed on his report to, lets say 250km/h, i will have a tyre problem.

by the way: the local paperwork also states the exact measurements of the wheels (D, W and offset), the wheel manufacturer or modell, the suspension fitted (e.g. GAZ, Spax, Bilstein) and even the height of the coil platforms and coil-rate (if there is a number on the coils) and the coil-colour.
furthermore the paperwork will also state the noise (static and driving) and i need an exemption for a smaller number plate, as the car was originally built for japan and thereofre the recess in the rear-bodywork is squaric for the typical small japanese reg.plate.





.


DuncanM

5,036 posts

259 months

Saturday 6th August
quotequote all
Ahh sorry, sounds like you have your hands full there.

Good luck, I hope you find a good solution.

DCerebrate

316 posts

90 months

Saturday 6th August
quotequote all
If regulators involved, they won’t give an inch unless there is literally no alternative. As the Pirellis are available you will just have to go for them. I recall buying a Ferrari Mondial about 2007. Tyres had great tread - but on the way home, no grip! Age was the problem, and the only solution was to buy a set of Michelin TRX metric size tyres @ just over £1000. That would be considerably more in today’s prices. I hope the rest of the homologation goes well.

DuncanM

5,036 posts

259 months

Saturday 6th August
quotequote all
It's annoying because the old ZR rating was quite vague really, and I doubt that they performed better than a current W rated tyre.

17" or 18" is the way forward.

jstx

6 posts

1 month

Sunday 7th August
quotequote all
LLantrisant said:
I need to replace the tyres on my car as they extremely old....the bridgestone potenza speed-rating fom that period (ZR) is meanwhile aged /obsolete

front 225/45 R16, rear 245/45 R16

all tyres i can find have speed-index "W" (up to 270km/h / 168mph)...the Cerb has a max-speed of 184mph/ 296km/h, so needs speed-index Y...but i cannot find tyres in above size with speed-index Y.

i dont want to open a discussion "why you need Y?"...i need it for a certain reason.
For the street, there's the YOKOHAMA ADVAN A052 and not much else. TOYO PROXES R888R are for the track and both are W speed rated to 168mph.


Tye Green

354 posts

89 months

Sunday 7th August
quotequote all
jstx said:
For the street, there's the YOKOHAMA ADVAN A052 and not much else. TOYO PROXES R888R are for the track and both are W speed rated to 168mph.
R888R perfectly Ok for road use too - particularly on a vehicle most likely to be used in dry conditions.

LLantrisant

Original Poster:

813 posts

139 months

Monday 8th August
quotequote all
at the end of the day i will only use this car for the typical local sunday blast.....so even a H-Index tyre would be more than sufficiant laugh