Tamora wheel specs

[blackmonday]

Does anyone know the full spec for both front and rear standard Tamora 18" Spiders (depth? tolerances? offsets? etc.)

[chris watton]

I dont know, but I'm sure I've just shaved off a couple of kilos off mine after doing the mother of all curbings trying to avoid a fu**ing lorry going too fast round a corner!!

[2 Smokin Barrels]

chris watton said:

avoid a fu**ing lorry going too fast round a corner!!

When those lorries get into the mating season, road safety becomes secondary.

[blackmonday]

Does anyone have any helpful and informative information?

This is what I've come up with from a variety of sources, however, I've not collected my Tamora yet so I'm not 100% sure if these are correct...

• Both front and rear Spiders are 18x8.5

• Standard front and rear tyres are 235/40 ZR18

So in theory if one is looking to replace the standard Spiders with an aftermarket wheel they should be 18x8.5 to use the standard tyre?

Or would, say, a 18x7.5 still be compatible with the standard tyre?

[19560]

Remember:

Silverstone TVR said:

18" TVR 'Spider' wheels are 8.5x18 5x114.3 et 33 rear and et42 front. 16" are 7.5x16 et25 rear and et38 front. If you're considering an alternative wheel be careful about getting the correct fitment - specifically, don't compromise beyond a couple of mm on offset and avoid spacers and non-precision centering rings. Watch out for different width wheels also and avoid generic aftermarket wheels if they are not heat treated.(Make sure you stay within ETRTO recommendations).

and no, 7.5 is too narrow for 18", 8.5 to 9.0 is fine.

[madbadger]

blackmonday said:

Does anyone have any helpful and informative information? This is what I've come up with from a variety of sources, however, I've not collected my Tamora yet so I'm not 100% sure if these are correct... Both front and rear Spiders are 18x8.5 Standard front and rear tyres are 235/40 ZR18

That's not right.

Spiders are 18x8.5 and the rear tyres are 235/40 but the fronts are 225/35.

If you were to inadverently end up with rear tyres on the front then they will rub on the wheelarches and make the turning circle even more bobbins.

[blackmonday]

19560 said:

Remember: Silverstone TVR said: 18" TVR 'Spider' wheels are 8.5x18 5x114.3 et 33 rear and et42 front. 16" are 7.5x16 et25 rear and et38 front. If you're considering an alternative wheel be careful about getting the correct fitment - specifically, don't compromise beyond a couple of mm on offset and avoid spacers and non-precision centering rings. Watch out for different width wheels also and avoid generic aftermarket wheels if they are not heat treated.(Make sure you stay within ETRTO recommendations). and no, 7.5 is too narrow for 18", 8.5 to 9.0 is fine.

Bearing in mind that I'm not that knowledgeable when it comes to the more technical aspects of TVRs - what is the second set of dimensions for - 5x114.3 and what exactly are the 'et' numbers?

[chris watton]

madbadger said:

[make the turning circle even more bobbins.

Is that possible!!!!!!!

[19560]

madbadger said:

Spiders are 18x8.5 and the rear tyres are 235/40 but the fronts are 225/35. If you were to inadverently end up with rear tyres on the front then they will rub on the wheelarches and make the turning circle even more bobbins.

That appears to be correct:

martinp said:

My car (delivered January 2005) has 225/35/18 on the front and 235/40/18 on the rear.

blackmonday said:

Bearing in mind that I'm not that knowledgeable when it comes to the more technical aspects of TVRs - what is the second set of dimensions for - 5x114.3 and what exactly are the 'et' numbers?

5 is the number of studs and 114.3 is the dia of an imaginary circle drawn through the stud centres. ET is the offset from the centre line of the wheel to the hub mounting face.
Bearing in mind that the front tyre is a 225 you could use an 8.0" rim if it helps you.

[blackmonday]

19560 said:

madbadger said: Spiders are 18x8.5 and the rear tyres are 235/40 but the fronts are 225/35. If you were to inadverently end up with rear tyres on the front then they will rub on the wheelarches and make the turning circle even more bobbins. That appears to be correct: martinp said: My car (delivered January 2005) has 225/35/18 on the front and 235/40/18 on the rear. blackmonday said: Bearing in mind that I'm not that knowledgeable when it comes to the more technical aspects of TVRs - what is the second set of dimensions for - 5x114.3 and what exactly are the 'et' numbers? 5 is the number of studs and 114.3 is the dia of an imaginary circle drawn through the stud centres. ET is the offset from the centre line of the wheel to the hub mounting face. Bearing in mind that the front tyre is a 225 you could use an 8.0" rim if it helps you.

Thanks everyone for all the information and help with this!


>> Edited by blackmonday on Monday 23 May 22:13

[ginner]

All,

If you search the gassing station, this has all been posted before. Any difficulty, i'll try and find info again.

J

[blackmonday]

ginner said:

All, If you search the gassing station, this has all been posted before. Any difficulty, i'll try and find info again. J

Searching the Gassing Station is where I started. Not finding what I was after I started this thread