Tire upgrade thoughts please?

Jordo!

Sorry to revive this thread from the dead, but I was looking at the R88's and wanted to see if you gents had any thoughts on the 295/30/19's for the rear and 265/30/19's on the front.

Seems there was some disagreement on whether it would be too wide or just right (I know the diameter will be off ay a bit on both) -- thoughts?

Am also open to other suggestions -- I had really wanted to do 245/40 F and 285/35 R, but those sizes seem to be tough to find in R compounds :shakeshead:

Basically, I want sticky, as wide as OEM or wider, and ideally a few lbs lighter (that's how I arrived at the R88's, BTW).

Any suggestions will be welcome

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cossie1600

crappy tire, useless ( I had 4 sets on 3 different car)

wh1te370z

295/35/19 - Hoosier A6 Radials lol

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1998 BMW 328is... Track Build
2010 White 370z.... sold

Nitrouz

I have 295 R888's on my 350z. 19x10.5 Volk GTS. Fits just right. I wouldn't use it on a smaller rim tho... It'll fit, but it might roll a bit. R888's are slightly underrated in size. 295's are more like 305's of other brand tires.

Hope this helps.

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cfweber

in NASCAR they save the burn outs till the end-they save their tires

at the drag strip, well those tires do NOT last long

the cutting edge technology more and more is launch control

no matter which tire you choose

if you don't have launch control, then you'll have to exercise self control

Jordo!

What do you guys suggest as a substitute for the RT-615's or the XS's then? Those are my go-to tires, but no sizes I can use. I was planning on a set of R-11's, but they are quite pricey and rather heavy.

Any suggestions for something bubblegum sticky, with a wear rating < 200, R compound or near-R in stickiness, (max summer I guess) that is also lighter than the stockers?

No new suggestions from GRM as far as I can see -- last big review I can find was the Texas Toast shootout...

Short lifespan is okay, although I do need something at least relativley suitable for a DD (so no track only tires -- I know R888 is pushing it for DD, but I also know folks who run them and get about a yr or so use).

Thanks

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cossie1600

with the r888, you will lose most of the grip after one month, they will be marginally better than your xs within the first 1500 miles

Jordo!

thanks for the input

I think I'm leaning towards the Advan AD08 -- rated as highly as the RE-11's and quite a bit lighter (by 2 lbs in the front and 4 in the rear).

Anyone use them?

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Blue370tt

I am running AD08s all the way around. 245/40/19 and 295/30/19.....great tire and very good grip.

Chan Chee Hoe

But the rear tires diameter is smaller than the front.!

Jordo!

Hmm. According to this tire calculator it's 26.7 front and 26 rear

Tire size calculator

I was thinking about those sizes too. How's it handle? How is traction (and you have a shed load more power to put down too!). Any issues with VDC?

EDIT: Ah, just checked: It's the 245/35's that are 25.8

http://www.tirerack.com/tires/tires....VAN+Neova+AD08

Are you running the 40's or the 35's in the front?

Actually, the change in aspect ratio is about the same running 35's in the front and 30 in the rear instead of 40 and 35.

Hmmm... maybe I will try that combo (245/35 F, 295/30 R)... I need wider wheels in the back. I can't get traction even with my lowly 250 lbft of torque

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cossie1600

Why are you going for 30 profile rear tires if you want to avoid wheelspin?

Jordo!

Isn't the width more important or does the sidewall also affect the contact patch?

Actually, I thought taller tires tend to be a bit more likely to flex in hard cornering, so the effect it has on contact patch is negative -- is this wrong?

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Blue370tt

This forum is funny......someone always questions your answer (even if its a real answer). I went with the 295/30 ON THE REAR for the width and yes, I needed more grip. The fact that its a 30 doesnt affect grip in a negative way and ALL the tires and car handle great. I am not tracking the car and only care about 1/4 mile and stoplight to stoplight. That being said, I live on a mountain with many curvy roads and the tires seem very good.

These AD08s are as close as you can get to an R rated tire without it being R rated. Jordo, you cant use the tire calculator for everything. If you check the width on these AD08 295/30/19 tires ON TIRE RACKS spec page, you will see they are actualy wider than some 305 tires.

Jordo!

I'm not sure what cossie is talking about on the lower aspect ratio in the back -- the shorter sidewall should mean less flex and therefore more responsive cornering but possibly harsher vibration in a straight line, so maybe that's it?

Curiously, no diameter info is provided for the 245/40/19's on the Tire Rack site (see link above), although the calculator gives the same number as Tire Rack for the 245/35 and 295/30 tires

If the front is wider than the rear (whether or not yours actually is), I think that would bias the car towards oversteer rather than pushing -- no?

I think I'm going with these tires next and just need to decide on either OEM dimesnions or go with the 245/35 F and 295/30 R.

Thanks for the input

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