Bristol Cars - Owners and Enthusiasts Forum  

Go Back   Bristol Cars - Owners and Enthusiasts Forum > Bristol Forums > 8 & 10 cyl Bristol cars

8 & 10 cyl Bristol cars Type 407 onwards - restoration, repair, maintenance etc

603 tyres

Reply
 
Thread Tools Search this Thread Display Modes
  #1 (permalink)  
Old 20-04-11, 05:15 PM
Member
 
Join Date: Mar 2011
Location: London
Posts: 82
Default 603 tyres

Looks like I am getting a set of Blenheim alloys for my 603.
I have as far as I can tell a choise of either 215/70 or 225/65 tyres.
Given I am looking at a stroker 408 ci. engine for more torque can anyone shed any light on the pros and cones of these tyre options? I assume the 70 section will give a better ride but the 65 ratio will give better grip.

Obviously the rolling radius for thse twio options may impact on my speedometer
so again any feedback on this issue will be appreciated.

Cheers
Will
Reply With Quote
  #2 (permalink)  
Old 20-04-11, 05:36 PM
Member
 
Join Date: Jul 2008
Posts: 73
Default

I think you'll struggle to find a suitable 225/65R15.

Your best bet is to find somewhere with some 215/70R15 P4000s left.
Reply With Quote
  #3 (permalink)  
Old 21-04-11, 05:41 PM
Member
 
Join Date: Mar 2011
Location: London
Posts: 82
Default 603 tyres

Phillip
Thanks for the feed back
looks like I can get 215 VR70 15 P400 for £162 each and 225VR65 15 P400 at £92each.
Odd that the bigger tyre is cheaper.
Reply With Quote
  #4 (permalink)  
Old 25-04-11, 06:34 PM
Member
 
Join Date: Sep 2010
Posts: 10
Default

Bearing in mind that the profile is a percentage of the tyre width, there is very little difference in the width of the two. 65% of 225 is 145.25 compared with 70% of 215 which is 150.5
By my rough calculations, the circumference of the 225/65 will be about 98.5% of that of the 215/70
I have 215/70 tyres and my speedometer over reads by about 4% so the difference would be favourable for me. I would be more worried about the wider front tyres being too wide on full lock and coming into contact with something that they should not.
Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


All times are GMT. The time now is 12:42 AM.


This is the live site

Search Engine Friendly URLs by vBSEO 3.6.0 PL2