19" OEM wheels: best non RFT sizes

R

Rassi

Member
 Belgium
Even with the adaptive M suspension I find that the ride on 19" wheels (style 276) is too crashy on the Bridgestone Potenza RFT, so as many of you I will go down the non RFT.

Given the 8" front and 9" rears, there is limited scope for changing the width of the tyres, but would still like to ask the collective wisdom about the following:

Front: 225/35/19 to 235/35/19 is still within 1 % change in circumference

Rear: 255/30/19 to either 255/35/19 (4 % change), while 265/30/19 (1 % change) is maybe too wide for a 9" wheel? 245/35/19 would be another option, but there is already precious little protection so not keen on a narrower tyre.

Anyone having upsized to one of these without any negative effects?

Tyres: Vredestein Ultrac Vorti in 235 and 265 would come to 500 euro, while Michelin PS4S would come to 750 euro. Not sure the PS4S are 50 % better...?
 
Rassi said:
Even with the adaptive M suspension I find that the ride on 19" wheels (style 276) is too crashy on the Bridgestone Potenza RFT, so as many of you I will go down the non RFT.

Given the 8" front and 9" rears, there is limited scope for changing the width of the tyres, but would still like to ask the collective wisdom about the following:

Front: 225/35/19 to 235/35/19 is still within 1 % change in circumference

Rear: 255/30/19 to either 255/35/19 (4 % change), while 265/30/19 (1 % change) is maybe too wide for a 9" wheel? 245/35/19 would be another option, but there is already precious little protection so not keen on a narrower tyre.

Anyone having upsized to one of these without any negative effects?

Tyres: Vredestein Ultrac Vorti in 235 and 265 would come to 500 euro, while Michelin PS4S would come to 750 euro. Not sure the PS4S are 50 % better...?
Click to expand...

There's plenty of room for wider tyres so don't worry about that. You're not going to get any rub by going up to 265/30 on the rear.

Regarding the tyres themselves, with the 35is you want as much grip as possible. I'd say the PS4S are worth the extra cash purely on performance alone. There's also the added benefit of longevity with the Michelin tyres, you're probably going to get 20-30% more life out of them.
 
Thanks, but is it possible/advisable to mount a 265 section tire on a 9" wheel? It is at the very upper limit
 
Rassi said:
Even with the adaptive M suspension I find that the ride on 19" wheels (style 276) is too crashy on the Bridgestone Potenza RFT, so as many of you I will go down the non RFT.

Given the 8" front and 9" rears, there is limited scope for changing the width of the tyres, but would still like to ask the collective wisdom about the following:

Front: 225/35/19 to 235/35/19 is still within 1 % change in circumference

Rear: 255/30/19 to either 255/35/19 (4 % change), while 265/30/19 (1 % change) is maybe too wide for a 9" wheel? 245/35/19 would be another option, but there is already precious little protection so not keen on a narrower tyre.

Anyone having upsized to one of these without any negative effects?

Tyres: Vredestein Ultrac Vorti in 235 and 265 would come to 500 euro, while Michelin PS4S would come to 750 euro. Not sure the PS4S are 50 % better...?
Click to expand...

Rassi, I’ve just done the exact same as you except 296’s

After seeking advice about tyre size changes etc I’ve gone to the same size you propose, 235’s and 265/30’s

I too was swithering between Verdi’s and PS4S’s. I bought mine from Blackcircles who have a deal on the 4S’s that made them £560 and that included a hefty additional postage charge because I’m not classed as mainland UK. This was around £40 dearer than the Verdi’s so was a no brainier.

Firstly the money off deal is only on for orders before by the 29th of Feb and secondly I’ve no idea about any relevant postage charges for you
 
Rassi said:
Thanks, but is it possible/advisable to mount a 265 section tire on a 9" wheel? It is at the very upper limit
Click to expand...

It's considered the maximum for a 9" wheel. You would be fine with 255 though, the MPS4S has decent rim protection and tends to fit wider than other tyres.
 
Excellent, thanks! The prices in 235/35/19 and 265/30/19 comes in at 590 euro mounted for the Vorti and 814 euro for the PS4s. Think it will be the PS4s with that relatively minor price difference.
 
I’ve gone to 235/35/19 265/30/19 on 296s on my 35i. They look spot on and protect the rims much better than the stick sizes which looked a touch stretched. Even the fitters commented that they look like they fit much better.
 
255/35 rears if you’re after ride comfort. It’s nearly a whole cm more sidewall than a 265/30.
 
Still in two minds about the rears, whether to go for 255/35 or 265/30. One thing is clear, the Potenza 050 RFT need to go!
 
R.E92 said:
Rassi said:
Even with the adaptive M suspension I find that the ride on 19" wheels (style 276) is too crashy on the Bridgestone Potenza RFT, so as many of you I will go down the non RFT.

Given the 8" front and 9" rears, there is limited scope for changing the width of the tyres, but would still like to ask the collective wisdom about the following:

Front: 225/35/19 to 235/35/19 is still within 1 % change in circumference

Rear: 255/30/19 to either 255/35/19 (4 % change), while 265/30/19 (1 % change) is maybe too wide for a 9" wheel? 245/35/19 would be another option, but there is already precious little protection so not keen on a narrower tyre.

Anyone having upsized to one of these without any negative effects?

Tyres: Vredestein Ultrac Vorti in 235 and 265 would come to 500 euro, while Michelin PS4S would come to 750 euro. Not sure the PS4S are 50 % better...?
Click to expand...

There's plenty of room for wider tyres so don't worry about that. You're not going to get any rub by going up to 265/30 on the rear.

Regarding the tyres themselves, with the 35is you want as much grip as possible. I'd say the PS4S are worth the extra cash purely on performance alone. There's also the added benefit of longevity with the Michelin tyres, you're probably going to get 20-30% more life out of them.
Click to expand...
Agreed PS4 S are primo quality tyres, never driven on anything better. But anythings better than the Bridgestone Potenza, I think they are 50% TEFLON LOL
 
MOT rules in Belgium “solved” my conundrum as 255/35 tyres would exceed by 4 % the increase in diameter, so no go. 265/30 PS4S it is, next weekend
 
Rassi said:
MOT rules in Belgium “solved” my conundrum as 255/35 tyres would exceed by 4 % the increase in diameter, so no go. 265/30 PS4S it is, next weekend
Click to expand...

Wouldn't 245 35 19 solve your problem :?
 
255/35 is under 4% diameter increase vs. 255/30.

255/30 from the factory still shocks me. Probably skinnier than most hypercar concepts. :o
 
You've talked me into it.
Don't want my rear wheels to break.
Deal on with kwik fit using a code leap till 01/03/20
Taking the advice on here and going for the 35 profile.
2 2553519 Michelin pilot sports 4s £286.10 fitted etc.
Guess I'll have a pair of Bridgestone rft for sale.
 
I got some avant grade M355 19'' x 9' front alloys and 19'' x 10' rear alloys that i'm planing on putting on soon, as my M326 rear wheels are cracked and i have my MOT due in Apr. The recommended tyres are 235/35/19 on the front and 265/30/19 on the rear. how ever I'm considering the following options:
1) 235/35/19 front, 265/35/19 rear (the extra tyre wall to protect my alloys)
2) 245/35/19 front, 275/30/19 rear or 275/35/19 (to protect the alloys from kurb rash)

I'm also worried about inner wheel arch rubbing, so I'm not sure what to put on my new alloys
 
I made this exact change last year:

New Front: Vredestein Ultrac Vorti 235/35 R19 96Y on Replica Style 313 8Jx19 ET40 (with 10mm H&R spacer 5x120 72.8 ).
New Rear: Vredestein Ultrac Vorti 255/35 R19 96Y on Replica Style 313 9Jx19 ET40.

Old Front: Bridgestone Potenza RE050A RFT 225/35 R19 88Y on Style 313 8Jx19 ET29.
Old Rear: Bridgestone Potenza RE050A RFT 255/30 R19 91Y on Style 313 9Jx19 ET40.

The Vreds are wonderfully grippy, ride feels a lot better than on the bridgestones, far less crashing around, and no cracks have appeared either. Also, my wheels are now replicas (because the genuine ones cracked on the bridgestones) so you won't need the spacers.
 
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