225/35/19 to 235/35/19.............

[Auric Goldfinger]

My 230 is getting close to needing 2 new tyres.  I'm thinking of getting 2 x 235/35/19 tyres and put them on the rear and bring the rears  ( 225/35/19 ) to the front as there's still plenty of tread on them.

 

My new local tyre place says it's not recommended as the 2 different tyre sizes on the car as it will affect the Tyre Pressure monitor.

 

True or False ?

 

 

[john999boy]

Each wheel is monitored individually so I don't think it will affect the the TPMS but is it wise to alter tyre sizes as I can't see you needing the extra grip for traffic light grand prix's!

[Ootohere]

http://kouki.co.uk/utilities/visual-tyre-size-calculator

?

Did you measure the tyres side by side?

 

Remind the Tyre Fitters that Audi did the RS3 with the Option of wider front wheels / tyres than the rears.

 

I often have bigger front tyres (on wheels) for a while at the start of winter and change them if the weather is not cold, or the snow passes, 

then when i want the 'Winter Tyres front and back on, all 4 get fitted'.

I used to fit bigger Fronts for the 1/4 Mile / Sprints as well.

You just reset the TPMS when you fit different Tyres, as when you reset Tyre Pressures, or fit a Spare Wheel.

 

 

 

Edited 11 October, 2018 by Offski

[Jeeves]

And there are a couple of all-season options in 235/35 19 too. Bridgestone and Maxxis (IIRC) if that helps.  Costco are promoting Bridgestones in their online magazine, but I've not seen any special pricing yet.

Edited 12 October, 2018 by Jeeves

[VRS_Dan]

Also, does this 10mm make much of difference? Needing 2 fronts pretty soon too......

[Auric Goldfinger]

30 minutes ago, VRS_Dan said:

Also, does this 10mm make much of difference? Needing 2 fronts pretty soon too......

 

I'm thinking of going to 235/35/19 which I think will give better Rim protection on my 19" Extreams.

[VRS_Dan]

Quick thought @Auric Goldfinger, does this not affect the rolling diameter and therefore the speed etc?

[Auric Goldfinger]

35 minutes ago, VRS_Dan said:

Quick thought @Auric Goldfinger, does this not affect the rolling diameter and therefore the speed etc?

 

Should be OK............................

[VRS_Dan]

So in fact it slows you down....... interesting 

 

Thanks 

[Ootohere]

But the gearing might be better not worse for acceleration and maybe it is going up hills that is different from going down hill.

 

Go over a cliff and the speed the car and occupants fall at will not matter whatever the wheel circumference.

Speed on a speedo is maybe more accurate with a change in diameter to actually being dead accurate rather than as they come from the factory.

http://kouki.co.uk/utilities/visual-tyre-size-calculator