Spoke to Camskill Tyres and they said....
Spoke to Camskill Tyres and they said....
Author
Discussion

CHIMV8

Original Poster:

2,782 posts

251 months

Sunday 2nd September 2012
quotequote all
After Toyos Proxes all round on 17", and they checked there data base on the Chim and said:

Fronts 205x45(wall height 92.25) or 215x40 (w/h 86)

Rears 225x45(w/h 101.25)

I have no PAS

Any comments or issues with these?

Edited by CHIMV8 on Sunday 2nd September 12:38

walt762

240 posts

262 months

Sunday 2nd September 2012
quotequote all
I've got 245s on the back of mine with 205s on the front (no power steering) but mine is a 500 and I think this is standard for it.
I think the 4.0 as standard had smaller rears so if yours is a 4.0 it sounds about right.

SILICONEKID340HP

14,997 posts

261 months

Sunday 2nd September 2012
quotequote all
I would go for

215/40/17

245/40/17`

What i don`t like about matching wheel sizes front and rear is you have to make up the 1" difference with the wall height causing it to look slightly odd .

Quietlybonkers

22,508 posts

174 months

Monday 3rd September 2012
quotequote all
SILICONEKID340HP said:
I would go for

215/40/17

245/40/17`

What i don`t like about matching wheel sizes front and rear is you have to make up the 1" difference with the wall height causing it to look slightly odd .
Errr....why? Seriously, I have been running on 205/40 17s all round and the handling is great. It also looks ok, but isn't nose down.
One thing did happen though - bonnet popped open at 135 mph, possibly due to more air getting in under the front and bowing the bonnet? Observations welcome.

SILICONEKID340HP

14,997 posts

261 months

Monday 3rd September 2012
quotequote all
Those 205/40/17 will be even more low profile ..

205/55/15 diameter 606

215/40/17 diameter 604

Yours 205/40/17 596

215`s are more suited .

CHIMV8

Original Poster:

2,782 posts

251 months

Monday 3rd September 2012
quotequote all
Quietlybonkers said:
SILICONEKID340HP said:
I would go for

215/40/17

245/40/17`

What i don`t like about matching wheel sizes front and rear is you have to make up the 1" difference with the wall height causing it to look slightly odd .
Errr....why? Seriously, I have been running on 205/40 17s all round and the handling is great. It also looks ok, but isn't nose down.
One thing did happen though - bonnet popped open at 135 mph, possibly due to more air getting in under the front and bowing the bonnet? Observations welcome.
Can you show a pic of the wheels/tyres?

Quietlybonkers

22,508 posts

174 months

Monday 3rd September 2012
quotequote all
CHIMV8 said:
Quietlybonkers said:
SILICONEKID340HP said:
I would go for

215/40/17

245/40/17`

What i don`t like about matching wheel sizes front and rear is you have to make up the 1" difference with the wall height causing it to look slightly odd .
Errr....why? Seriously, I have been running on 205/40 17s all round and the handling is great. It also looks ok, but isn't nose down.
One thing did happen though - bonnet popped open at 135 mph, possibly due to more air getting in under the front and bowing the bonnet? Observations welcome.
Can you show a pic of the wheels/tyres?
I will take one tomorrow morning....not got a good enough one

CHIMV8

Original Poster:

2,782 posts

251 months

Monday 3rd September 2012
quotequote all
Quietlybonkers said:
CHIMV8 said:
Quietlybonkers said:
SILICONEKID340HP said:
I would go for

215/40/17

245/40/17`

What i don`t like about matching wheel sizes front and rear is you have to make up the 1" difference with the wall height causing it to look slightly odd .
Errr....why? Seriously, I have been running on 205/40 17s all round and the handling is great. It also looks ok, but isn't nose down.
One thing did happen though - bonnet popped open at 135 mph, possibly due to more air getting in under the front and bowing the bonnet? Observations welcome.
Can you show a pic of the wheels/tyres?
I will take one tomorrow morning....not got a good enough one
Cheers

OleVix

1,438 posts

178 months

Monday 3rd September 2012
quotequote all
205/40 17 on rears is way too small, speedo reads mucho wrongero...

Quietlybonkers

22,508 posts

174 months

Monday 3rd September 2012
quotequote all
Not a lot wrong - about 3% I think. Which is how far wrong my daily driver is too on the correct tyres. Will check with the satnav.

I went to buy 215s, but all they had to hand was 205s, and they were molto cheapo, so as I knew I was going to trash them on track days, a spot of "what the he'll" crept in

SILICONEKID340HP

14,997 posts

261 months

Monday 3rd September 2012
quotequote all
Quietlybonkers said:
Not a lot wrong - about 3% I think. Which is how far wrong my daily driver is too on the correct tyres. Will check with the satnav.

I went to buy 215s, but all they had to hand was 205s, and they were molto cheapo, so as I knew I was going to trash them on track days, a spot of "what the he'll" crept in
205`s on the rears is very wrong !

A light weight high power rear wheel drive car with 205`s on the rear, you must be crazy ..nono

The minimum width for the rears are 225`s ,you will need a 7.5j rim ..


Quietlybonkers

22,508 posts

174 months

Tuesday 4th September 2012
quotequote all
Hear what you are saying. Car going in for oil change etc today, I will ask he who knows for his opinion. I am not arguing with you, I agree it does seem wrong. They are Yokohama Paradas, and I tend to use it in the dry only.

In my defence, the Pro Jaguar test driver who drove it at my request for a few laps on my last track day remarked that the handling was a lot better than he expected and seemed very well sorted. His only suggestion was to fit less sticky tyres to make the car a bit looser!

Quietlybonkers

22,508 posts

174 months

Tuesday 4th September 2012
quotequote all
I will post photos ASAP. The reason i went to smaller tyres is that the offset on my wheels is slightly too wide, so under really hard cornering the tyres were catching the wheel arches.

I shall swap to standard 15/16 set up soon, for the winter

CHIMV8

Original Poster:

2,782 posts

251 months

Thursday 6th September 2012
quotequote all
Quietlybonkers said:
I will post photos ASAP. The reason i went to smaller tyres is that the offset on my wheels is slightly too wide, so under really hard cornering the tyres were catching the wheel arches.

I shall swap to standard 15/16 set up soon, for the winter
rolleyes

Quietlybonkers

22,508 posts

174 months

Thursday 6th September 2012
quotequote all
Sorry, it had to go to the garage for a check over and is still there as it needs new shocks, new wishbone rubbers and the exhaust gaskets replacing.......might be a while before i can get a photo

blueg33

46,697 posts

254 months

Thursday 6th September 2012
quotequote all
Quietlybonkers said:
Sorry, it had to go to the garage for a check over and is still there as it needs new shocks, new wishbone rubbers and the exhaust gaskets replacing.......might be a while before i can get a photo
And the professional driver said it handled well! yikes

Quietlybonkers

22,508 posts

174 months

Friday 7th September 2012
quotequote all
Yes, he did......which was quite reassuring, as I had no real idea what a TVR should feel like.
It still feels good, but the man with the knowledge and the ramp andaa socket set says my rear Billies are weeping a bit and will only get worse, so he recommends replacing them with something adjustable.
The front wishbone rubbers are needed because I asked him to check why I got a heavy vibration braking hard from 110/120 mph, and he noticed slight play in those joints and said he would replace those first before seeing if there was any issue with warping of the discs.

blueg33

46,697 posts

254 months

Friday 7th September 2012
quotequote all
For changing tyre sizes here is a useful tool

Tyre Size Calculator