Cliff\'s 1st Gen Purchase - Goldie

[CHC (RIP)]

Considering possible change of tyre size to 15" Dynamic Motorsport rims from standard but never done this before. If I put larger rims on, would this have any effect on the speed recorded at the odometer? Help please.

[syebba]

Considering possible change of tyre size to 15" Dynamic Motorsport rims from standard but never done this before. If I put larger rims on, would this have any effect on the speed recorded at the odometer? Help please.

 
Yes it will unless you keep the rolling diameter the same,ie wheel + tyre height.
If you put 15" rims on,you could use a lower profile tyre to try & keep the rolling diameter the same or close to your existing set up.
Measure your existing rims[13 or 14"?] convert into milimetres,then the side profile of your existing tyres[it\'ll be stamped on tyre sidewall] & add the 2 measurements together to give you the rolling diameter.
 
I did this when i had my dax cobra went from 15" > 18" rims,15" rims had balloon tyres,on 18" i put on elastic bands!

[syebba]

Shauns put bigger wheels on his fb,maybe he,ll be able to comment?

[syebba]

Actually you\'ve just reminded me.
My 1st fb,20 years ago now! i put on larger compomotive alloys & new tyres,it was a S3 & i think i changed from 14" rims to 16",i could\'nt be bothered working out the rolling diameter & i don\'t remember it having too adverse an affect on the speedo readings.
Shaun best to comment on his set up.

[Steve-A]

I\'ve done the maths and a 195/50/15 tyre should be the same as the standard 205/65/13.

Also 195/50/15s are about the cheapest size of tyre out there which is good news. Toyo T1rs are less than £30 a corner!

If think you\'ll find you need to either switch to s3 front hubs and rear axel, or have some PCD adapters made up too. The 2 has a PCD of 4x110mm which is pretty much un heard of outside of old Mazdas!

[johnnyboy]

Considering possible change of tyre size to 15" Dynamic Motorsport rims from standard but never done this before. If I put larger rims on, would this have any effect on the speed recorded at the odometer? Help please.

 
See these 2 links for size comparison calculations:
 
 
http://www.alloywheels.com/tyrecalc.asp
http://www.tyretraders.com/Tyres_Calculator.aspx
 
John

[johnnyboy]

I\'ve done the maths and a 195/50/15 tyre should be the same as the standard 205/65/13.
 
Also 195/50/15s are about the cheapest size of tyre out there which is good news. Toyo T1rs are less than £30 a corner!
 
If think you\'ll find you need to either switch to s3 front hubs and rear axel, or have some PCD adapters made up too. The 2 has a PCD of 4x110mm which is pretty much un heard of outside of old Mazdas!

I can confirm that Toyo T1R\'s are exellent tyres got the dry and very good for damp / wet tarmac. They hold the road very well indeed, they don\'t tramline etc. and when they break away they are progressive - they don\'t just give up on you. Two minor criticisms: We have had 2 sets on my wifes MGF in 215x40x16 and they only do 15,000 - 17,000 miles per tyre (which is not great, but then they are cheap...) and THEY DO NOT LIKE MUD OR SNOW - at all. So be careful on muddy or snowy lanes. Also not so good when the temperature is below zero until they get nice and warm.
 
For a cold/snow/wet tyre I can heartily recommend Michelin Pilot Alpin\'s. Fantastic in all conditions but expensive unless you get them on Ebay...
 
John

[Steve-A]

Good points John! They are useless in the snow!

I\'ll still be fitting a set to my FB

[syebba]

See these 2 links for size comparison calculations:
 
 
http://www.alloywheels.com/tyrecalc.asp
http://www.tyretraders.com/Tyres_Calculator.aspx
 
John

Their useful links John.
ta stu..

[johnnyboy]

Good points John! They are useless in the snow!
 
I\'ll still be fitting a set to my FB

 
Yeah... I think they are great - the best warm weather tyres I have driven (thats why we have a new set in the garage for the MGF at the moment - but we put a set of s/h Michelin Alpins on it last December.....)
 
John

[CHC (RIP)]

See these 2 links for size comparison calculations:
 
 
http://www.alloywheels.com/tyrecalc.asp
http://www.tyretraders.com/Tyres_Calculator.aspx
 
John

Excellent links there John - the main benefit is the comparison chart to enable you to choose the best size tyre whilst maintaining speedo values.
Thanks, will use this when I\'m ready although I\'m fairly sure I\'ll finish up with the Team Dynamics Monza R in gold (of course).

[CHC (RIP)]

Great shout on the tyre front there too guys.  Think I\'ll be going for the dry tyres as I\'m not planning to use the car during the winter months - but then again with the best plans etc, etc who knows ?

[CHC (RIP)]

Been cleaning the underside when I could during the week whilst waiting for the suspension links etc to be blasted - yeah I know it doesn\'t take long but mate doing them for me when he has a free moment.
 
As nearside lower suspension link was bent, I got hold of another pair (which are being blasted with all the others) and I was having problems removing a stubborn bolt on this lower link (rear connection to the axle). The nut was free but when attempting to undo the bolt I could actually hear the rubber bush being strained as it was turning too. So I used an extension onto the socket set tee bar (about 4 ft long) and still it didn\'t budge so I drew the conclusion that the bolt must be seized in the crush tube so I had to hacksaw the bolt out - awkward but doable little so\'n\'so. This means I can continue with preparing the axle later.

[CHC (RIP)]

Then pushed on with pre-treating and coating the prepared areas to seal them.  More preparation work tomorrow hopefully.

[CHC (RIP)]

Work has been interfering with my leisure time recently so very little time spent on preparation - however did manage to clean up the majority of the rear axle ...