Has anyone put Runflats on a G29 Z4?
Has anyone put Runflats on a G29 Z4?
Author
Discussion

Vroomer

Original Poster:

1,887 posts

207 months

Monday 8th June
quotequote all
I had Runflats on previous Z4 and was quite happy with them. My G29 doesn't have Runflats, doesn't have a spare and everybody says don't use the tyre repair system as it fouls up the tyre and the electronics.

I thinking about switching to Runflats. Does anybody know if they are made for a G29 and would they cause any issues with the TPMS?

Thanks.

Gassmi

149 posts

5 months

Tuesday 9th June
quotequote all
Yeah people have done it. Tyres exist in the right sizes. TPMS works fine as long as you get the right sensors fitted or swap yours over.

Main thing is the ride gets firmer and the G29 already rides stiffer than the old E85. You’ll feel every cat’s eye. Also no spare wheel well so you’re just carrying a can of goo anyway.

If you liked them before you’ll probably be fine. Just check the tyre pressures more often runflats hate being low.

Vroomer

Original Poster:

1,887 posts

207 months

Tuesday 9th June
quotequote all
Gassmi said:
Also no spare wheel well so you re just carrying a can of goo anyway.
The point of Runflats is that you don't need a spare wheel or goo.

Fox-

13,566 posts

273 months

Tuesday 9th June
quotequote all
Vroomer said:
The point of Runflats is that you don't need a spare wheel or goo.
If you're a meaningful distance from home its going to need to be recovered regardless of whether you have run-flats or not, surely.

Pica-Pica

16,329 posts

111 months

Tuesday 9th June
quotequote all
TPMS would be fine. Just check your rims are designed for runfrlats. JJ rim profiles are required for runfrlats and are also capable of taking non runfrlats.

8Tech

2,195 posts

225 months

Saturday 20th June
quotequote all
Well, this is the first time I have heard anyone wanting to go to runflats!

InitialDave

14,831 posts

146 months

Saturday 20th June
quotequote all
Vroomer said:
everybody says don't use the tyre repair system as it fouls up the tyre and the electronics.
How much are TPMS sensors?

As I understand it, using the runflat capability of runflats kills the tyre anyway, and they're meant to be replaced, so if the runflats are more expensive (as they seem to be), I would use the goo and take the hit on the sensor.

My maths would be the cost uplift of initial purchase of four runflats vs one replacement sensor, should using the goo permanently damage it (may not even be guaranteed to?).

Mr Tidy

30,559 posts

154 months

Saturday 20th June
quotequote all
Driving a run-flat with no air in will wreck it anyway.

My E86 handbook stated you shouldn't go over 50mph or a maximum of 155 miles (less with a loaded car or two people) with a flat run-flat.

As I often do trips hundreds of miles from home with my current Z4 without run-flats I carry a full-size spare wheel, jack and wheel-brace to avoid getting stranded!

I'd stick to normal tyres but maybe get one of those tyre-plug kits if you don't want to lose most of the boot with a spare wheel.