Over inflated tyres!!!

[threestacks]

Ok so when I test drove my Tamora prior to buying her, I thought 'wow' she rides really well, supple but with good feedback.

Then before I purchased her, I have the 18" Spiders sent back to the original manufacturer for a full refurb and in fact two had to be replaced due to internal fracturing.

Ever since I picked her up, I thought she was riding quite hard and hopping around on the road way more than I remembered and a couple of people even commented how hard the ride was. I just put it down to the rubbish road quality in my area.

Anyway, today I was doing a bit of maintenance and thought i'd go check tyre pressures, and they were up at 36 psi per corner!!

Have now lowered it to 24 psi all round and she is sooo much more comfortable!

Lesson learned, but why would they have been inflated so high in the first place???

[Pursyluv]

It's always the same, no matter who puts tyres on your TVR, they always over-inflate them!

[DJR 7]

I had exactly the same experience! Had the wheels on my Cerbera refurbished and when I got it back it drove like a pig.
Checked the pressure and sure enough 36psi, amazing the effect it has on the car.
Check mine every fortnight now
D

[alex_gray255]

Install a TPMS system, then you'll know in the future.

[ShiDevil]

alex_gray255 said:

Install a TPMS system, then you'll know in the future.

Or don't spend 100+ and buy a 5 pound pressure gauge and spend the remaining 95 pounds on fuel and drive it

[alex_gray255]

Yup, or use one of those too.

I have one on each keyring, very useful!

[Adrian@]

I would of thought that that it was standard practice to over-inflate tyres when they are fitted, to settle them on the rim and that this would be adjusted by the driver ... unless the car was hanging around at a workshop, then the workshop would adjust them a few days later.
Adrian@

[DJR 7]

Adrian@ said:

I would of thought that that it was standard practice to over-inflate tyres when they are fitted, to settle them on the rim and that this would be adjusted by the driver ... unless the car was hanging around at a workshop, then the workshop would adjust them a few days later.
Adrian@

That's all well and good but surely they should tell you that they've over inflated them?
I know it's good practice to check tyre pressures regularly but I for one would expect the pressures to be correct
If they have been fitted by a "professional".
Same principle applies after a service ...... I wouldn't think to check fluid levels for a week or two.
D

[Adrian@]

DJR 7 said:

Adrian@ said:

I would of thought that that it was standard practice to over-inflate tyres when they are fitted, to settle them on the rim and that this would be adjusted by the driver ... unless the car was hanging around at a workshop, then the workshop would adjust them a few days later.
Adrian@

That's all well and good but surely they should tell you that they've over inflated them?
I know it's good practice to check tyre pressures regularly but I for one would expect the pressures to be correct
If they have been fitted by a "professional".
Same principle applies after a service ...... I wouldn't think to check fluid levels for a week or two.
D

I hear what you are saying...as a child with my 2nd TVR out of 74 (which I happen to own now after buying it again a few years back) I had serious balance issues on my then refurbished alloys, which was diagnosed as ME having spun the tyres on the rims, playing silly buggers. I still use the same business, staff come and go, they always advise on them being up high (leaving them to settle on the rim) and release agents on new tyres ...information which I pass onto to my customers, or deal with it myself.
Adrian@

[hurricane_82]

Hi guys,

I'm going to throw a bit of a curve ball here, i'm a first time TVR (T350C) owner (had it for just over a year now after exporting it from the UK to NZ. I was blown away by the performance at the start and then I guess I got a bit used to it... How wrong was I? I hadn't ever checked the tyres until one day they looked a bit deflated (especially the rears) so I went off to check them and found they were sitting at around 18 PSI on the rears and about 22 PSI on the fronts. Being a newbie at this point I hadn't checked the booklet to follow the advice and although I knew there were tyre inflation posts on here I hadn't checked them out either so I inflated them to 30 PSI all around and holy SH*T!!!

What a difference!

The car feels 100% quicker, more responsive and planted at the same time as still being able to soak up most of the roads bumps.

I will try 24 PSI but they may have already deflated to that figure naturally and i'm assuming I probably won;t get that WOW factor I got with 30 PSI...

Thoughts?

[threestacks]

Definitely worth a go and worth checking frequently.

The book says they should be 28 psi per corner I think, but at 24 psi the car is just that little bit more comortable, but then again here in the UK around where I live the roads are in a terrible state, perhaps in NZ you have nice smooth roads?

[alex_gray255]

NZ - nice smooth roads?!

Lol - Not when I lived there

But then Hamilton always was cheap when it came to road repairs.

There used to be metal roads (non-tarmaced) on many of the routes
I used to take out of the city, especially on the south side.

Not sure how it is now as that was a few years ago...

[hurricane_82]

I'm based in Auckland and although the roads are maintained pretty well up here, that's more than can be said for a lot of the narrow country lanes with crazy cambers in the road. I planted my foot on the accelerator a short while ago as you do and the car felt very unstable at high speed, I won't say what I was doing speed-wise but it was fast...

Now it'd be interesting to see how the car feels on a flat smooth surface such as a runway. I'll probably ask someone in the NZ Air Force if I can take it out as we play them at football...