Wheel rims for track sud?

Southern75 · August 20, 2011, 08:42:24 PM

What size wheel rim combination is everyone using?

I was looking to purchase a set of rims 14" x 6.5" or 7's and can't seem to fins any available?

Am i being silly or what?

Is 15" a dumb idea?

colcol · August 21, 2011, 10:47:39 AM

First of all check what type of rubber is available and when you decide the type and size of your tyres, get the rims to suit, sometimes if you have a odd size rim, it can be hard to get tyres to suit, Colin.

Martinsifredi · August 21, 2011, 01:20:02 PM

Hi there,

15" rims would be ideal for these cars and the 33's . As there is a greater tyre selection. How ever you can get 14's in semi slicks and road use. toyo proxies 888, bridgestone semi's .

if you want to stick to 14's i have a set of alloys rims that may suit :-) . if you like email me on mvsifredi@iinet.net.au

thanks,

Martin

aussiehcviva · August 21, 2011, 01:33:05 PM

195x50x15s with yoko ao50s

aussiehcviva · August 21, 2011, 01:40:30 PM

on 15x7s

Frank Musco · August 21, 2011, 11:02:40 PM

Yes, it is difficult to find 2nd hand rims for a track sud. The offset and pcd are a rare combination for fitting big rubber under the guards. same with 2nd hand racing rubber.
You can get almost anything new, therefore you must decide how you are going to use the car. Also weight should be considered. For example, a 13" rim fitted with a 205/60/13 is lighter than a 15" rim fitted with a 205/50/15. Also the suds front Tyres do all the work and the rears have trouble getting warm.

I have run a 15x7 with a 205/50/15 ao48R yokohama and it's a great tyre in all conditions, and has a good wear rate on the front, rears hardly wear. Most of the time I've run 13"x6 with 205/60/13 Yokohama and it's also a great tyre in all conditions, that's my bread and butter. I also liked using the rear formula ford Tyres, 2nd hand, again good in all conditions, nice and light although you can burn the fronts out very quickly when over driving the car. They all give basically the same lap times.

I will eventually get something like a 205/50/15 AO50 Yokohama which I've heard is even better than the 48's on a 15x7, and for going really fast I will get some slicks on 13"x8 rims, after flaring my guards.

aussiehcviva · August 22, 2011, 12:30:46 AM

Frank, the yokos are a big step up. was using toyo r specs and the difference is immediately noticeable.

the 4x98 pcd really restricts your options. to that end i have bought adapters to make it 4x100. this vastly expands the rims to choose from and enables you to get properly lightweight models like the enkei r1 which in 15 inch specification weigh in at 4.3kg. the adapters do add weight but also get you about an extra five inches of track. haven't fitted it all yet (it's all sitting in the garage waiting until my enginer is rebuilt after years of strong service) but I assume guards will need to be rolled too.

Southern75 · August 28, 2011, 05:30:00 PM

Yeah,

I currently have the standard 14" x 5.5 teledial wheels on it ...

I was looking as the vairous options ... not neccesarily second hand either.

I thought a miniumum would be 14 x 6" but then though ... what sort of improvement would that give me ... but these are cheap and easy to get new and Ao48's are relatively affordable and i can get a heap of second hand tyres off the really serious group S boys ...

That's why i was thinking a 14" x 6.5.
I am less keen on 15" but yes there are some very good 15" options out there.

My car is going to be logged marque sports so i can really do anything within reason.

Frank Musco · August 28, 2011, 09:49:16 PM

Some people would say 14x6" rim fitted with a 185/50 or 55?/14 AO48 or similar is ideal, not really a minimum, as the car is relatively light. And I'm not sure myself as I have done half a dozen sprints with a set, and got similar lap times compared to the 205's I normally use. The main thing I noticed was, on the front, the 185 wore evenly across the tread, as opposed to anything wider, which tends to use the inner 2/3's of the tread more, which makes them wear unevenly. I also had them on a set of teledials, 14x5.5", not ideal, but works ok. I also remember the car felt 'better?', more positive around and out of corners on the 185/50/14 compared to the 205/60/13's. And yes, I have adjusted my suspension several times to get the wider tyres wearing flat, but don't understand, temperature across tyre is very good but wear is not even?

Maybe start with a set of 185/50/14 Ao48 or similar on your teledials and take the car to a sprint and see how it drives/wears the tyres. Then if you decide to upgrade your rims and tyres, you will have a good base to make comparison. Record tyre temps!

Evan Bottcher · August 28, 2011, 10:20:50 PM

I have 14x7" rims, and I find there is a lack of suitable race rubber. Lots of 195/60 as it's the historic size, but that's a bit tall. My last set of tyres were 205/55 Toyo R888 which were pretty good. Earlier in the year I borrowed a set of 185/55/14 Bridgestones on teledials and as Frank said they felt great, the lower ratio made a big difference in my underpowered car and very positive. I'd go down to a 185/50 or 55 but I'm advised not to put them on my 7" rims. I've just bought a set of kumho v700 in 195/55/14.

Frank - you've got outboard front brakes, do 13" rims fit over the calipers? Where would you get 13x8" rims?

Frank Musco · August 28, 2011, 10:55:28 PM

Evan, I run the solid rotor front brakes which my 13x6" bathurst style Globes and another momo copy both fit over, but do not fit the vented rotor setup. Both STD setup.

As for 13x8, difficult to find, difficult to fit. A couple of years ago I looked around the second hand mag dealers and found a few sets, but nothing that I could simply bolt on and use. So when I'm ready to go to slicks I'll look for a set of minilite type mags and make them fit by changing the PDC using inserts and flaring the guards. I borrowed a 13x8 minilite from a Fiat and it bolted over my solid rotor brakes and they look and fit good.

Evan Bottcher · August 28, 2011, 11:27:57 PM

Ah - so not over the vented brake set up that I have. I had thought they would be the same size.

thanks, Evan.

Fast Eddie · August 30, 2011, 12:49:43 PM

they will with a spacer though from memory.

meizhak · August 30, 2011, 08:29:01 PM

Run studs instead of bolts With 10mm spacer from memory

Ed, long time no see

Evan Bottcher · September 19, 2011, 09:48:28 AM

I don't follow - where does the 13" wheel foul on the vented caliper? Does it hit the rim, or the wheel centre? Offset or radius? If you're saying a spacer will allow the 13" rim to clear the 16v vented caliper, then it must be hitting on the side of the caliper.

I need to find a suitable 13" rim and try it out.