Tyre sizes when running 19"
Discussion
41upk said:
I'm running toyo's , fronts are 235 35 ZR19 , Rears 265 30 ZR19
What Toyo is that a 888??And Don that sounds like lots of front end grip
My fronts have a set of 235's on but i was under the impression allot of Sags run the same all round like yours
Do you get any body rub front or rear?
Copied from other thread; may help
Again, no expert but HTH
G
RedSpike66 said:
Graham
How am I supposed to know that I might need heavier load springs ??
No expert on any of this but have experience of the issue; Answer- when tyres rub continually around a sweeping corner How am I supposed to know that I might need heavier load springs ??
RedSpike66 said:
How do I know whether my bumps stops are too short or too long ??
When tyres rub on hard compression (in a dip)RedSpike66 said:
How do I know whether my car could be set up better, with different camber, toe etc. ??
It probably can to factory settings, but a wheel change/tyre o/d changes this, so STR8-six will sort correct settings at next service.RedSpike66 said:
I notice the body does rub, especially the front arches, under very fast cornering, but I have 19s on...
TADTS - inc. standard 18". The 255/30/19 should work ok as they are same o/d as standard, you will just have a rougher ride, other sizes will cause more rubbing issues, but if the rims are wider than 8.5" this adds to the effective tyre width and more rubbing and stability issues. Solution= increase ride height (back as well to keep the rake)or increase spring rate, or factory wheels/tyres.Again, no expert but HTH
G
VARLEYHYD said:
TADTS - inc. standard 18". The 255/30/19 should work ok as they are same o/d as standard, you will just have a rougher ride, other sizes will cause more rubbing issues, but if the rims are wider than 8.5" this adds to the effective tyre width and more rubbing and stability issues. Solution= increase ride height (back as well to keep the rake)or increase spring rate, or factory wheels/tyres.
Again, no expert but HTH
G
Do you mean 255/30/19 all round Graham?Again, no expert but HTH
G
What was the original spec on 18" spiders?
7 TVR said:
Do you mean 255/30/19 all round Graham?
What was the original spec on 18" spiders?
Yes, and if I had 19" it could only be 255/30/19 f&r for me, but remember if the rims goes up from std 8.5" wide conflict can then occurr at good pace.What was the original spec on 18" spiders?
As Mark said 255/35/18 was sag standard.
G
Christian
As said by those who really know what they're talking about, Sag standard is 255/35/18 all round on 8.5J wheels.
TVR Power (JadeR) 19's are 8.5J front, 10J rear.
Recommended tyre sizes are 235/35/19 front and 265/30/19 rear (very similar rolling circumference).
Seems to work very well in my experience, and should be lots of choices in that tyre size. Remember 888's are much squarer and will likely rub on arches without suspension changes. 10J rim can take up to 285 wide tyre if you want/need extra rear wheel grip :-)
Don1's wheels and tyre issues are a one-off from what we can make out, but he reports his handling to be fine.
HTH
Mike
As said by those who really know what they're talking about, Sag standard is 255/35/18 all round on 8.5J wheels.
TVR Power (JadeR) 19's are 8.5J front, 10J rear.
Recommended tyre sizes are 235/35/19 front and 265/30/19 rear (very similar rolling circumference).
Seems to work very well in my experience, and should be lots of choices in that tyre size. Remember 888's are much squarer and will likely rub on arches without suspension changes. 10J rim can take up to 285 wide tyre if you want/need extra rear wheel grip :-)
Don1's wheels and tyre issues are a one-off from what we can make out, but he reports his handling to be fine.
HTH
Mike
I can actually remark on the Jade R's Vs the SP12 (18") wheels now....
From what I can feel, it's all down to weight. The SP12 do accelerate quicker, and have a faster response at the wheel.
BUT
I much prefer the Jade R's. There is a much better ride quality - you just don't notice the bumps that are transmitted through with the SP12 (I have remarked in the past that the Sag on Spiders feels skittish compared to the Jades). In addition to this, there is much better feedback through the wheel, and I feel far more comfortable really attacking a demanding road with them on the car.
My 2p (guesswork) on the setup is that the higher weight of the Jades is forcing the damper to work properly in conjunction with the springs, and find the perfect balance between the two. The SP12 feels like the springs are too hard, and the damper isn't working hard enough?
All rubber was the Yoko AD08.
From what I can feel, it's all down to weight. The SP12 do accelerate quicker, and have a faster response at the wheel.
BUT
I much prefer the Jade R's. There is a much better ride quality - you just don't notice the bumps that are transmitted through with the SP12 (I have remarked in the past that the Sag on Spiders feels skittish compared to the Jades). In addition to this, there is much better feedback through the wheel, and I feel far more comfortable really attacking a demanding road with them on the car.
My 2p (guesswork) on the setup is that the higher weight of the Jades is forcing the damper to work properly in conjunction with the springs, and find the perfect balance between the two. The SP12 feels like the springs are too hard, and the damper isn't working hard enough?
All rubber was the Yoko AD08.
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