Author Topic: 13" Tyres  (Read 11003 times)

0 Members and 1 Guest are viewing this topic.

Offline Arron Homewood

  • Club Members
  • Newbie
  • *
  • Posts: 25
13" Tyres
« on: April 08, 2016, 12:24:39 pm »
Hello Folks.

So, as many of you know Gary (brother) and I run a Skoda Estelle in class 4.

About 14 years ago Firestone F560's were the favored 13" tyre and we used them with some success. When I heard they had stopped being manufactured I rang round and found about 12 which I bought. Unbelievably we are still working through this stock, still have 3 that have never been fitted.

We have kept them in a cold dark room and they have lasted well. However they are starting to feel a bit hard...as can be expected.

So, help required. What would be the current favored 13" 165 or 175 tyre?

Thank you for your help.

Regards Arron

Offline Paul Wheatley

  • Club Members
  • Full Member
  • *
  • Posts: 104
Re: 13" Tyres
« Reply #1 on: April 09, 2016, 03:26:15 pm »
Arron, Glad you asked, I was about to!

I've been toying with the idea of entering a fwd hatchback for Class O in the future (so my wife or daughter would come trialling with me) but I have little idea of what tyres to use on its 13 inch wheels.
PW.

Offline Arron Homewood

  • Club Members
  • Newbie
  • *
  • Posts: 25
Re: 13" Tyres
« Reply #2 on: April 19, 2017, 09:25:46 pm »
As we have a few more folk reading than a year ago...anyone got a suggestion for 13" Tyres???

Offline Paul K

  • Club Members
  • Sr. Member
  • *
  • Posts: 405
  • Paul Khambatta
Re: 13" Tyres
« Reply #3 on: April 22, 2017, 09:04:50 am »
There's the approved tyre list; a pdf copy is available at https://www.actc.org.uk/car-tyre-list-updated/  . The only trouble with that is a lot of research finding which tyres are available in 13 in.  :-[  .  I'll ask Simon to put a note in NOTW referring to this topic, then perhaps someone with the knowledge will post a reply here.

Offline Arron Homewood

  • Club Members
  • Newbie
  • *
  • Posts: 25
Re: 13" Tyres
« Reply #4 on: April 23, 2017, 11:13:51 pm »
Hi Paul

Thank you.

I had planned to have a good look around on The LE but most have been distracted...

Regards Arron

Offline Simon Woodall

  • Administrator
  • Jr. Member
  • *****
  • Posts: 85
Re: 13" Tyres
« Reply #5 on: April 24, 2017, 10:47:06 am »
I have to ask the obvious question, why 13" tyres?
Why not 14"?  As well as being easier to find this would give you better ground clearance, and is perfectly legal for an Estelle as the early models we so equipped.
When there were lots of Skodas around, all the "hotshots" ran 14" wheels.

Offline Arron Homewood

  • Club Members
  • Newbie
  • *
  • Posts: 25
Re: 13" Tyres
« Reply #6 on: April 25, 2017, 10:41:10 pm »
Hi Simon

Thanks for the reply.

14" would adjust the final drive ratio, with only 1300cc of Cold War Power we have found that we can struggle if we have grip. Bamforth is almost too steep if there is grip, so the lower final drive of 13" is important.

Also, I have not seen Estelle's with 14" wheels, S100's had them which is where the 14's have come from. Trying to be 'pure' I decided I would not use 14's.

Do you know what tyres the mk1 and mk2 Escort's guy's are using?

Regards Arron


Offline Alastair Queen

  • Club Members
  • Jr. Member
  • *
  • Posts: 81
Re: 13" Tyres
« Reply #7 on: April 27, 2017, 03:29:54 pm »
Hi Simon

Thanks for the reply.

14" would adjust the final drive ratio, with only 1300cc of Cold War Power we have found that we can struggle if we have grip. Bamforth is almost too steep if there is grip, so the lower final drive of 13" is important.

Also, I have not seen Estelle's with 14" wheels, S100's had them which is where the 14's have come from. Trying to be 'pure' I decided I would not use 14's.

Do you know what tyres the mk1 and mk2 Escort's guy's are using?

Regards Arron

Arron, you are correct about the 'final drive ratio'.....the advantage of the 14 inchers is, a slightly longer footprint.  Early Estelles [105, 120] had 14 inch wheels. [I bought the last 6 brand new wheels from Kings Lynn back in the 1990's], so they remain 'valid' even for Rapids.

However, 13 inch wheels are a lot easier to come by these days....as they will get bent at some point or other.

I have only failed to ascend Bamford once [with an engine fault]...with 14 inch wheels.  But I haven't been 'out' in my Skoda for many years now.

Best bet for final drive ratios is to obtain a 4 speed 'box.   If 5 gears is an absolute necessity, , it's all about transaxle side plates....and the differential..... If a swing arm 5 speed box is available, this will likely have the 4.2 final drive ratio, and can be converted to semi trailing arm suspension too...or, vice versa.  My Rapid, which is safely rotting in a field nearby...has a semi trailing arm suspension, but a 4.2 ratio 5 speed box.
This was also available for the Estelle....called the 120LX.
Somewhere I have a 4.6 'mountain' ratio ....as used in the world cup rally by the 1000MBs  .....spas one's top speed, but , climbing is good. The only issue is, the pinion shaft doesn't work in the later 4 speed box...however, the pinion happens to be the same size/number of teeth as the 4.2 ratio boxes, so, with a bit of howling it may be possible to use the bigger crownwheel?

Too much techno info? Sorry...

Offline Paul Wheatley (Wheaters)

  • Club Members
  • Newbie
  • *
  • Posts: 31
Re: 13" Tyres
« Reply #8 on: April 28, 2017, 08:41:33 pm »
I'd be more interested to know which tread patterns work. The tyre list is the bible as far as which ones are allowed, but of no use when trying to decide which ones work and which don't.
Cheers, PW.

Offline Arron Homewood

  • Club Members
  • Newbie
  • *
  • Posts: 25
Re: 13" Tyres
« Reply #9 on: April 29, 2017, 12:15:07 am »
Alastair

Thanks for your reply, its been awhile and I hope you are keeping well.

I do have some 14" S100 rims, had them many years but never tried them.

I also have the 4.11 diff it came from a 120L5 which had swing axles. I built this in a trailing arm box about 15 years ago, had no issues with it. The mountain ratio, think it was actually 4:44 does seem hard to find. I think I have one in a S100 box but its still in the car rotting away in the field...sounds familiar! Someone, I think yourself told me that they were not very strong and stripped very easily???

The other issue would be the lack of 5th gear for driving to / from events. Cant imagine driving home from the LE in a gear that would effectively be lower than the current 4th. In its current set up its possible to cruse along the motorway with all the other traffic at around 75/80.

I am happy with the 13" wheels, still using the alloys and don't really have issues with them. Could do with a lower final drive ratio but the current one works reasonably well.

So, back to the original question...what tyres?

Offline Alastair Queen

  • Club Members
  • Jr. Member
  • *
  • Posts: 81
Re: 13" Tyres
« Reply #10 on: April 29, 2017, 12:11:47 pm »
Hi Arron......I now have a face pinned to a name!  :)

I suggested d the 14 inchers as that may have enlarged one's choice of tyre? [literally, as well as literally?}

[Isn't there someone [on the Classic Trails Facebook group] who has a stash of the old kingpin tyres [175/80, but cannot recall the diameter?]]


Offline Alastair Queen

  • Club Members
  • Jr. Member
  • *
  • Posts: 81
Re: 13" Tyres
« Reply #11 on: April 29, 2017, 12:23:57 pm »
http://www.kingpin-tyres.com/wp-content/uploads/2013/03/165x13-KMT-638x1024.png

They appear to do a 165/80x 13, of the old [Michelin?] tread pattern?

or, take  a gander at

https://www.camskill.co.uk/m4b0s383p0/Car_Tyres_-_MPV_Tyres_-_People_Carrier_Tyres_-_14_inch_R14_inch_-_175_80_14_175_80R14_R14_inch_-_175_14_175R14#

If a tyre isn't on the  A-list, then all that's needed is to submit ar request for inclusion to the ACTC tyre officer...with perhaps a tread rubbing?

Don't worry about Chinese ditch-finders.....it's what you'll be doing anyway!  :)

Offline Arron Homewood

  • Club Members
  • Newbie
  • *
  • Posts: 25
Re: 13" Tyres
« Reply #12 on: May 03, 2017, 10:33:59 pm »
Alastair, thank you.

When are we going to see you out on the hills again abusing your Skoda?

Offline Myke Pocock

  • Club Members
  • Newbie
  • *
  • Posts: 40
Re: 13" Tyres
« Reply #13 on: May 04, 2017, 09:07:15 am »
Arron, he's currently abusing his Dellow! I was toying with the idea of trying my old 13's just to see if it makes much difference to me. Probably not as I have significantly less experience than you two blokes so probably wouldn't see the difference.

Offline Alastair Queen

  • Club Members
  • Jr. Member
  • *
  • Posts: 81
Re: 13" Tyres
« Reply #14 on: May 04, 2017, 09:22:51 am »
Come now Myke..Arron's not that big...two blokes-worth?

You've also been out more than I have....many more times......

I have a wee FIAT 126 which I intend to work up for things like MCC trials and stuff.....and I still have the Skoda..somewhere in a field....for someone living on their own, there are rather a lot of cars on the property, of various sorts....