Size of Tyres

[anonymous-user]

Hi
I did search no post for 18 months so I think I can ask .

Mk 1 year 2000 Tuscan , currently 235 on front 40's and 255 rear 35's.
When I search on here many have used 225 front and 40's all around with 255 on the rear and other combinations.

What sizes do you use with success on your cars .
Thank you

David

[Oneball]

I’ve got 235/40/18 on the front and 245/40/18 on the rear. Which I think is the factory spec on a Tuscan. Iirc 255/35/18 is standard for the rear of a Tuscan S.

With the rack shimmed and suspension set up properly it seems to work well.

[pac1uk]

I would not recommend 225 on the front, from my experience they tramline terrible and on bad road surfaces they just feel dangerous!

235 have more tyre wall and are more forgiving to bad road surfaces. The 225 looks stretched to fit and very little tyre wall available.

[Jay964rs]

I switched from 255/35/18’s all around to 235/40/18 fronts and 255/35/18 rear.
Much more comfortable on the road, a lot less tram lining and just better feel with a lot less fidgeting.
I’ve got the steering rack spacer and I’m on Nitron adjustables.

[Malcster]

After much deliberation, I ended up with Goodyear Eagle F1's (Assym 3):

- 225/40 R18
- 245/40 R18

[S6 Devil]

235/40/18 fronts and 255/35/18 rear.

[glow worm]

Jay964rs said:

I switched from 255/35/18’s all around to 235/40/18 fronts and 255/35/18 rear.
Much more comfortable on the road, a lot less tram lining and just better feel with a lot less fidgeting.
I’ve got the steering rack spacer and I’m on Nitron adjustables.

So did I , but with 225s on the front and far less tramlining than 255. Just put Michelin Sport 4 s on and they feel nice , but my F!s were 10 years old !!!

[Jay964rs]

On the Pilot sport 4’s too.
A great road tyre compared to the previous Federal 595 RSR track tyre.
Good choice sir

[anonymous-user]

I called one of the big TVR sellers today and asked what they would fit on a Mk1

235 40 18 Front and 245 40 18 rear .

I am fitting a set on Wednesday I will tell you when it stops raining after I have fitted the tires it will ...

[glow worm]

I prefer to go with what Ben Lang (the TVR suspension designer) told me , that he had designed it to be, before Peter Wheeler "over rubbered it "

[anonymous-user]

I said I would report back and despite the rain the 235 40 tyres on the front and the 245 40 tyres on the back are the best set up since I've had the car in over 6 years the bump steer and tramlining has near disappeared it is a remarkable change at the front of the car taking off some to 235 35 tyres.
It's now like driving a 90s car rather than a 70s car really very surprised that new tires can make so much difference and using the size suggested by a TVR specialist

[Malcster]

glow worm said:

I prefer to go with what Ben Lang (the TVR suspension designer) told me , that he had designed it to be, before Peter Wheeler "over rubbered it "

...which was?

[glow worm]

Malcster said:

...which was?

Wheeler wanted wider 255s on the front because he thought they looked more aggressive , not that they drove better. 225 on the front , 255s on the rear was what Ben advocated to me for a Mark 2 'S' with Bilstein 'S' springs and dampers. Not sure what you would put on MK1s with Harvey Bailey springs & dampers other than new ones .

Edited by glow worm on Wednesday 14th February 20:33

[MrChips]

glow worm said:

Wheeler wanted wider 255s on the front because he thought they looked more aggressive , not that they drove better. 225 on the front , 255s on the rear was what Ben advocated to me for a Mark 2 'S' with Bilstein 'S' springs and dampers. Not sure what you would put on MK1s with Harvey Bailey springs & dampers other than new ones .

Edited by glow worm on Wednesday 14th February 20:33

I’ve been running that combo for 6yrs and all is good. 225/40 front and 255/35 rear. Changed last year to a set of AD08r tyres and they are not in any way stretched in the 225/40 size. I’ve seen a few Tams on 225/35 which are stretched a little but not drastically so.

[Malcster]

glow worm said:

Wheeler wanted wider 255s on the front because he thought they looked more aggressive , not that they drove better. 225 on the front , 255s on the rear was what Ben advocated to me for a Mark 2 'S' with Bilstein 'S' springs and dampers. Not sure what you would put on MK1s with Harvey Bailey springs & dampers other than new ones

Edited by glow worm on Wednesday 14th February 20:33

Interesting, but I thought the Tuscan (MK1) chassis/suspension was designed around 16" rims?

[glow worm]

Malcster said:

Interesting, but I thought the Tuscan (MK1) chassis/suspension was designed around 16" rims?

I seem to remember 16" on early ones ... I guess with TVR I should have used the word "developed" rather than "designed" , since the process seems to have been more trial and error than mathematical