Wheels on a griffith
Discussion
Having read a few articles on here, I am thinking of changing my wheels that I have on my griff, at present it sits on 18" spiders in black, I am wondering if it would be better on say 17" or the 16" spiders with a larger tyre wall. The sizes at present are 225x35xzr18 on the front. The reason for changes are the thread I read about there is not much notice given when the car just goes on a corner because of the low tyre wall having no give in it, if the wall sizes increased then there would be more signs of the car going to slide or losing grip. Your thoughts on this would be appreciated.
I think you are correct, but one question first - did you get the ride height adjusted and a full four wheel alignment done after you changed the wheels and tyres? I was advised to have my geo and ride height re-set for the wheels and tyres I wanted to use on track, and it made a big difference to the handling.
QBee said:
I think you are correct, but one question first - did you get the ride height adjusted and a full four wheel alignment done after you changed the wheels and tyres? I was advised to have my geo and ride height re-set for the wheels and tyres I wanted to use on track, and it made a big difference to the handling.
I bought the car as it is just over a week ago, but the front has been catching the top of the inner arch, so the answer to your question is really no. Who does that sort of work ? I am in Durham.225 35/18 gives a rolling diameter of 615mm
215 45/17 gives a rolling diameter of 625mm
You use the first, I use the second
But the late Griffs used 225 45/16, giving a rolling diameter of 609 mm on the same width as you have
The catching could be a combination of width and rolling diameter, but it's so marginal that I am sure you could stop it by adjusting the ride height up fractionally. It tends to sag over time.
I think Hexham Horseless Carriages are your nearest TVR place - you need a TVR person who will understand ride height settings. On my car, it's just a case of adjusting the spring base height on my adjustable dampers with two G spanners, but you need to know how much so go to an expert.
Handling - the best £100 you will ever spend is on a computerised 4 wheel alignment. TVRs are quite sensitive to being perfectly aligned toe, cast and camber and front to rear. The expert should check the suspension for play first, as there is no point in doing the alignment if parts need changing.
The above hopefully will sort your issues for not a lot over £100, and may help you not to have to spend £1000 changing wheels and tyres.
Hope this helps. Email me for my phone number if you want a chat - click on my name to access my profile, email is top right.
215 45/17 gives a rolling diameter of 625mm
You use the first, I use the second
But the late Griffs used 225 45/16, giving a rolling diameter of 609 mm on the same width as you have
The catching could be a combination of width and rolling diameter, but it's so marginal that I am sure you could stop it by adjusting the ride height up fractionally. It tends to sag over time.
I think Hexham Horseless Carriages are your nearest TVR place - you need a TVR person who will understand ride height settings. On my car, it's just a case of adjusting the spring base height on my adjustable dampers with two G spanners, but you need to know how much so go to an expert.
Handling - the best £100 you will ever spend is on a computerised 4 wheel alignment. TVRs are quite sensitive to being perfectly aligned toe, cast and camber and front to rear. The expert should check the suspension for play first, as there is no point in doing the alignment if parts need changing.
The above hopefully will sort your issues for not a lot over £100, and may help you not to have to spend £1000 changing wheels and tyres.
Hope this helps. Email me for my phone number if you want a chat - click on my name to access my profile, email is top right.
Edited by QBee on Tuesday 15th April 01:40
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