245/40 on the rear?

[Zippee]

Hi all,

Anyone run 245/40 on the rear of their 350 or Tam? I'm looking at Toyo R1Rs, can get a 225/40 on the front changing the 225/35 on there currently.
Current rears are 235/40, would taking the width to 245 make a lot of difference?

[Alistair H.]

Can you not get 255/35's?

[sidpinup]

I think it depends on the individual car. I don't think my Tam would take wider without catching the inner arch more frequently. I know that some people have though.

[Zippee]

Alistair H. said:

Can you not get 255/35's?

You can - just not sure which size would suit the car better, wider = more grip but potential for fouling the arches, taller means a little more shock absorbtion and ?? problems...

[Alistair H.]

Zippee said:

You can - just not sure which size would suit the car better, wider = more grip but potential for fouling the arches, taller means a little more shock absorbtion and ?? problems...

Just that I run 255/35 225/40 on the Cerb. They are the same rolling radius to within a mm. I run 888's which must be the same carcass shape as the R1R's.

[Zippee]

Alistair H. said:

Zippee said:

You can - just not sure which size would suit the car better, wider = more grip but potential for fouling the arches, taller means a little more shock absorbtion and ?? problems...

Just that I run 255/35 225/40 on the Cerb. They are the same rolling radius to within a mm. I run 888's which must be the same carcass shape as the R1R's.

Thanks! The 45/40 is also £30 a corner cheaper though obviously if the wider tyre is better then I'll happily pay the extra.

[rico23]

I run 245/40 R888 on the rear of my T350 and they only just fit inside. Height wise they are fine. I know 255 would not fit.

[Fusion1]

255 35 18 all round on my t350 but fronts catch now and again, will be changing fronts to 245 35 which should do the job, anybody got any views on vredestein ultra sessenta as they are a good price.

[Flyin Banana]

The sag runs 255/35/18 R1r's all round with no problems

[Mattt]

rico23 said:

I run 245/40 R888 on the rear of my T350 and they only just fit inside. Height wise they are fine. I know 255 would not fit.

They do, 255/35 here and they fit fine.

I value the extra grip at the rear more than a slightly harsher ride. The cars were dramatically under tyred as stock IMO.

[sascha]

.. and please what is max. "driveable" at the front hoofs ?

[K4TRV]

Zippee said:

Hi all,

Anyone run 245/40 on the rear of their 350 or Tam? I'm looking at Toyo R1Rs, can get a 225/40 on the front changing the 225/35 on there currently.
Current rears are 235/40, would taking the width to 245 make a lot of difference?

I run with 255 RiRs on the rear and I have to lift ride height an inch as it touches on the outer inside part of wheelarch (IYSWIM ?). But then I Sprint & Hillclimb mine?

I also run Kumoh's with 245 and am able to lower ride height again - nearly bought the 265 Kumoh's, maybe I'm glad I didn't ???

HTHs

T

[rico23]

Mattt said:

They do, 255/35 here and they fit fine.

I value the extra grip at the rear more than a slightly harsher ride. The cars were dramatically under tyred as stock IMO.

I know they fit on others but on mine they will not fit, I have tried! It is something to do with the chassis and they are all different so I've been told. The 245 only just fit for me.