Hey Mark, No worries - what is the view of the guy you have been having a long running discussion with??
> Cheers Andrew, I appreciate the feedback. > > So far nothing has been said to make me think that 14's are the way to go. > This justifies what I have been telling myself for ages, just needed some > other opinions to confirm it. > > Thanks to all who have replied. > > Mark. > > P.S. If any one thinks that 14's would be the way to go, I would still like > to hear why. > ----- Original Message ----- > From: "Andrew Greenbury" <[EMAIL PROTECTED]> > To: <[EMAIL PROTECTED]> > Sent: Thursday, April 04, 2002 4:20 PM > Subject: Re: What size wheels are best? > > > > Hi Mark, > > > > yeah I agree with Errol for the same kind of reasons esp in your > > racing context. Your rubber choice is greater, and you already have > > the 13s. > > > > Rotational inertia is proportional to mass*radius^2, so the > > distribution of mass around the wheel has a greater effect than the > > overall weight itself. The lower the inertia the less torque/force > > required to accelerate (and brake) the wheel. Also the wheel will > > accelerate/brake faster. > > > > Because of this as Errol said, bigger rims also require bigger > > brakes, but bigger brakes add more rotating mass etc etc. > > Generally, larger diameter tyres weight more too, and this mass > > has the largest radius. > > > > >From a handling point of view, the 13s give you a wider contact > > patch and a larger grip envelope. Because you have to keep the 60 > > profile, the difference in sidewall thickness should be similar as > > Ben mentioned, so you would expect the cornering stiffness of both > > sizes to be similar. The perception of the lower the profile the better > > the performance isnt always the case - what size tyres do F1 use? > > > > Andrew > > > > > Ok Errol, > > > > > > I currently have the 13" wheels. Brake wise I am running a set of > > > four piston sumitomo callipers. These callipers are apparently > > > works Nissan Callipers from an older model Japanese 300ZX. The > > > Callipers are not alloy, and are quite weighty. The disc is of > > > unknown origin (came with the car) but is 260mm diameter and is > > > vented. > > > > > > This setup works very well in it's current configuration. If > > > however, I was to go to 14" wheels, what size rotor and which > > > Callipers would you recommend? > > > > > > Also, from a handling point of view, would the 14" wheels provide > > > better handling? Keeping in mind I still have to run the 60 series > > > tyre, and would be forced to run a 195 as opposed to the 205/60/13 > > > I am currently running? > > > > > > What do you think? > > > > > > Mark. > > > ----- Original Message ----- > > > From: E Smith > > > To: [EMAIL PROTECTED] > > > Sent: Thursday, April 04, 2002 11:43 AM > > > Subject: RE: What size wheels are best? > > > > > > > > > Its also a matter of moments and braking toque. Assuming the > > > same caliper and applied pedal force in every condition: - > > > > > > The larger the rotational diameter of the wheel/tyre, the disc > > > required must be proportionally larger diameter to maintain the > > > same braking effort. > > > > > > > > > > > > The classic wheel size example is the "EVO mock up" lancer with > > > the 9" discs inside 18" wheels and they wonder why they will not > > > stop. I have a feeling that a lot of accidents recently have been > > > caused by these mismatches of tyre - wheel / brake - caliper > > > combinations. > > > > > > > > > > > > I personally like 13 X 7" rims as the range of rubber is better > > > for this size wheel, from treaded competition tyres to slicks. > > > They are also usually lighter. The next size up is 15" rims to > > > get a good selection of rubber. As the diameter goes up though so > > > does the price. > > > > > > > > > > > > Cheers > > > > > > Feral Errol > > > > > > > > > > > > -----Original Message----- > > > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED]]On Behalf Of Mark Alford > > > Sent: Thursday, 4 April 2002 9:26 AM > > > To: Ozdat discussion list > > > Subject: What size wheels are best? > > > > > > > > > > > > Hey listers, > > > > > > > > > > > > I have been having a long running discussion with a guy I race with > regarding wheel sizes, and what size wheel is best to run. I thought I might > throw the question open to the list and see what thoughts are out there. > > > > > > > > > > > > What I would like to know is - What size (diameter) wheel is > > > best to run? the choice is between two sizes 13" and 14" (both > > > with 7" width). Something else that also needs consideration is > > > the tyre that I must run. If I run the 13" I can use a 205/60. If > > > I run the 14" I must run a 195/60. (Everyone must use a 60 series > > > tyre) > > > > > > > > > > > > So who out there has some thoughts on which combination I should run? > I would also like to know the reasons behind peoples thoughts. > > > > > > > > > > > > I look forward to the feedback. > > > > > > > > > > > > Mark. > > > > > > > > > > > > > > > --membersozdat------------------------------------------------------- > > > OZDAT Mailing List Please Note:- > > > Send (un)subscribe requests to [EMAIL PROTECTED] > > > Send submissions to [EMAIL PROTECTED] > > > No unauthorised redistribution of this email > > > http://www.ozdat.com/ozdatonline/index.htm > > > http://www.ozdat.com/ozdatonline/listindex.html > > > http://www.mail-archive.com/[email protected]/ > > > --------------------------------------------------------------------- > > > --membersozdat------------------------------------------------------- > > > OZDAT Mailing List Please Note:- > > > Send (un)subscribe requests to [EMAIL PROTECTED] > > > Send submissions to [EMAIL PROTECTED] > > > No unauthorised redistribution of this email > > > http://www.ozdat.com/ozdatonline/index.htm > > > http://www.ozdat.com/ozdatonline/listindex.html > > > http://www.mail-archive.com/[email protected]/ > > > --------------------------------------------------------------------- > > > > > > > > > > --membersozdat------------------------------------------------------- OZDAT Mailing List Please Note:- Send (un)subscribe requests to [EMAIL PROTECTED] Send submissions to [EMAIL PROTECTED] No unauthorised redistribution of this email http://www.ozdat.com/ozdatonline/index.htm http://www.ozdat.com/ozdatonline/listindex.html http://www.mail-archive.com/[email protected]/ ---------------------------------------------------------------------
