Member Since: 27 Mar 2007
Location: Hartlepool
Posts: 11
Does Size Matter??
I have a base D3 with 17" wheels
Q1 can I fit 18" or 19" wheels?
Q2 will it improve my mpg?
Q3 do I need to get speedo recalibrated?
D3 TDV6
Triumph Bonneville
G1DFZ
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13th Aug 2007 2:08 pm
bkehoe
Member Since: 24 Feb 2006
Location: Wexford
Posts: 1481
In fact, your MPG will probably be worse, as stock tyres on the 18s and 19s are 20mm wider than those on the 17s, meaning more rolling resistance (between say 2 of the same brand of tyre), though the difference would be so small I don't think it'd be possible to see if in the real world! You will, however, get more grip which is always useful. IE - 05 D3 TDV6 HSE - Zambezi Silver
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13th Aug 2007 2:17 pm
DSL Keeper of the wheelie bin
Member Since: 11 May 2006
Location: Off again! :-)
Posts: 73078
I haven't noticed any difference in mpg between 17"s, 18"s & 19"s, done 5000 miles on 18s then 11000 on 17"s on my present D3, 15k on 19"s on last D3.
13th Aug 2007 2:42 pm
arjay1_uk
Member Since: 27 Mar 2007
Location: Hartlepool
Posts: 11
Thanks everyone for your help on these matters D3 TDV6
Triumph Bonneville
G1DFZ
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You will, however, get more grip which is always useful. 
