Author Topic: tyres  (Read 819 times)

Offline johnf

  • Major Contributor
  • ***
  • Posts: 4,087
  • Karma: +34/-0
    • View Profile
    • http://
tyres
« on: April 07, 2017, 09:39:19 AM »
Not rotary related just a general question regarding tyre sizes.

In order to try and soften the ride on my car [getting old and like a bit more comfort] I'm thinking of replacing my front tyres which need doing anyway.

They are currently 235. 35. 19 and I'm thinking of changing to 235. 45. 19

Would this make ant difference to the ride and are there any reasons that I shouldn't

I've looked up the manufacturers original spec and it's 225. 40. 19 so it's changed during it's life anyway.

As its a rotary forum I'll whisper this bit BMW E46 M3 - You probably know I've owned three rotaries so I'm allowed :icon_thumleft:

I started with nothing and I have most of it left

Online clive

  • MRC Founder/President
  • Administrator
  • Major Contributor
  • *****
  • Location: Kent
  • Posts: 9,792
  • Karma: +27/-0
    • View Profile
    • http://mazdarotaryparts.com
Re: tyres
« Reply #1 on: April 07, 2017, 10:27:36 AM »
Hi John,

Yes the bigger profile will help but would advise doing this to all four also lowering the pressures down a few psi.

 
All the best Clive

Offline johnf

  • Major Contributor
  • ***
  • Posts: 4,087
  • Karma: +34/-0
    • View Profile
    • http://
Re: tyres
« Reply #2 on: April 07, 2017, 10:51:57 AM »
Hi Clive

Haven't spoken for a while, I trust all is well with you and Lisa.

Will give you a call to catch up, the time seems to fly by these days.

I did increase the wall size on the rears a few months ago but some knowledgeable guy in a tyre place said I shouldn't mess with the original spec.
I started with nothing and I have most of it left

Offline johnf

  • Major Contributor
  • ***
  • Posts: 4,087
  • Karma: +34/-0
    • View Profile
    • http://
Re: tyres
« Reply #3 on: April 07, 2017, 10:53:37 AM »
Re the pressure, the car has low pressure warning so lowering the pressure is an issue.
I started with nothing and I have most of it left

Offline boosted

  • MRC Full Club Member
  • Major Contributor
  • *****
  • Location: Westbury Wiltshire
  • Posts: 7,622
  • Karma: +22/-0
  • Worryless, Dream more.
    • south west
    • View Profile
Re: tyres
« Reply #4 on: April 07, 2017, 12:30:26 PM »
A big jump like that will prob cause an abs error. Like said go to 40 profile.

Sent from my SM-N910F using Tapatalk

92 FD rx7 Twins 13.5psi. Track car
94 Westfield Se 231 rx8 street port powered. Race car
EAT SLEEP ROTOR REPEAT.

Online clive

  • MRC Founder/President
  • Administrator
  • Major Contributor
  • *****
  • Location: Kent
  • Posts: 9,792
  • Karma: +27/-0
    • View Profile
    • http://mazdarotaryparts.com
Re: tyres
« Reply #5 on: April 07, 2017, 08:39:46 PM »
The profile is in proportion to the width of the tyre so the narrower tyre had even less of a profile.

Best go back to what the car has as standard
All the best Clive